Archoil AR6400-D & BG244 for Diesel

The Oil Oil Companies, Car Manufacturers & Parts Industry
Do Not Want You to Know This!

“OVER 80% of ALL minor running issues CAN BE RESOLVED with professional cleaners & treatments”

Rough Idle?

Lack of Power?

Poor Acceleration?

Hesitation or Flat Spots?
Reduced Fuel Consumption?
Excessive Exhaust Emissions?

Regular Engine Warning Lights?


Discover how thousands of average motorists and fleet operators are saving £££’s in fuel, vehicle maintenance and repair.


Do Not Get Scammed. Fortunately there are honest repair garages and specialists that will offer the most cost effective solution for their customers, BUT, many continue to bend the moral compass – “That’ll need four new injectors….. or a new EGR valve……or a new turbo and so on”.

We are Powerenhancer, part of a dedicated team of experts that have been working in and researching the fuel, additives and lubricants market for over a decade. What we have learned will surprise you and some of it we cannot repeat in public. A combination of underperforming fuels, mismatch fuel to engine designs, deliberate additive propaganda by fuel part manufacturers and a minefield of technologies has kept us busy.

What we will reveal is this:

1. Oil (fuel) companies are struggling to keep up with innovative engine designs focused on reducing emissions. Many modern engines, particularly with very high pressure fuel and complex emissions control systems are overly sensitive to fuel quality and the tolerances can be very narrow. Some early 1990’s diesel engines would happily run on used, filtered chip fat but try anything remotely similar with a modern engine and it will throw an engine warning light within 10 miles. When an engine operates outside of these tolerances, poor running, debilitating carbon deposits and even premature wear can result. This has been exacerbated with an increase of biofuel content in both petrol and diesel fuels. We have seen vehicles with irregular running fuel systems, completely blocked Exhaust Gas Recirculation Systems and Diesel Particulate Filters even before the first service was due!

2. Lubricants and Additives Racket – MOST additives and oils are rebranded. Visit an automotive trade show and I guarantee that you will struggle to find one true additive manufacturer for every twenty companies promoting additives and/or lubricants. It may surprise you that some of the largest, well known brands sell nothing more than rebranded products. This industry is just one big marketing competition and some are very good at it too. We work with carefully selected and established manufactures, true manufacturers with substantial R&D capability and patented technologies, expert chemists, tribologists and engineers. Neither they nor we are interested in using attractive girls spread over bonnets of cars to market products.

3. Vehicle manufactures already use additives…but only when it suits them. For example, a prominent European petrochemicals company supplied an aggressive fuel system cleaner to a well know vehicle manufacturer because they were facing hundreds of thousands of potential warranty claims from carbon build-up on the fuel injectors. This was a classic example of fuel versus engine design mismatch! The additive was administered to all effected engines on a recall or during the next scheduled service and customers were none the wiser.

4. Many diesel vehicles are mis-sold as they are simply not designed for three mile round trip school runs. Some are sitting time bombs just waiting for the complex and sensitive emission control systems to complain of excessive carbon build-up. Engines are designed to naturally consume a certain amount of hydrocarbon, however, a combination of driving style and fuel quality means that this threshold is often exceeded.

5. Fuel Injector Cleaning Equipment Racket. Fuel system cleaning technology is such that rigging up injector cleaning apparatus to the fuel rail is no longer required as injector cleaning and carbon removal via the fuel tank is as effective and in many cases even more efficient. However, through smart marketing, celebrity endorsement and attractive dealer margins, such convoluted systems are back in vogue. They were very popular back in the 90’s but we stopped listing them for sale years ago as they offer no additional value to the consumer. Only an increase in cost.

If you find your vehicle not running or performing as it should and suspect that the engine is suffering from accumulated deposits in the fuel system, combustion area, EGR, CAT or DPF, then we can help.

Whether you are looking to resolve running difficulties or carry out routine maintenance we are the trusted source for professional products and expert advice. Through years of experience our corporate customers, fleet operators, garages and enthusiasts continue to use us in the knowledge that we remain at the cutting edge of fuel and engine cleaning technology and always provide the best maintenance and remedial products to satisfy and in many cases, exceed their requirements.

We do not supply “magic” additives with ridiculous horsepower or fuel economy claims. What our products actually do is restore lost performance by removing accumulated deposits in both the fuel system and engine. Performance and economy degradation is then restored and providing there are no other underlying problems, your vehicle will perform as it did when it left the factory.

Where to start?

For a professional clean of the fuel system, injectors and combustion area we recommend Archoil© AR6400 (AR6400-D for diesel engines). This modern treatment, which is simply added to the fuel, safely cleans away accumulated deposits in the entire fuel system (including injectors) and from the combustion areas. It will also help remove post combustion deposits from the emission control/exhaust components and filters. If this doesn’t resolve the problem or provide the results you are after then no other chemical-based products is likely to work for you.

One of our regular use fuel conditioners will then maintain a clean fuel system and engine whilst offering additional benefits such as: maintenance cleaning, protection against poor quality fuel, lubrication, combustion modification, emission reduction and so forth. For dedicated area cleaning please refer to the table below for our recommendation.

You may have heard about our products from car clubs, internet forum, friends or family. If so, you will be familiar with the positive response our products have received.
Have you used cleaning products before and they didn’t work? It is important that you use the correct targeted chemistries for the right job. What makes AR6400 effective? A main contributory factor with petrol cleaners is the high concentrate of polyether amine chemistry. As proven by the Engine Manufacturers Association ( and the World Wide Fuel Charter (WWFC), PEA as it is commonly known, is the only recognised and approved chemical compound for FAST removal of hard baked carbon deposits from gasoline engine. AR6400 has the highest safe amount of PEA for effective deposit removal for guaranteed results. It is also fortified with the latest generation PIBSA/PIBSI detergents and Archoil’s coveted combustion modifier. The new 2014 AR6400-D diesel cleaner contains an even higher ratio of detergents with the same combustion modifier, highest quality fuel system lubricant, and cetane booster (up to 7 points).

Most fuel cleaners contain high levels of solvent or kerosene based fillers whereas AR6400 and AR6400D are fortified with state of the detergents and additives, squeezed into a 430ml bottle and providing the most complete cleaning package available in a single bottle.

FACT: Internal combustion engines are inefficient and whilst this remains the case they will accumulate deposits. Whilst steps have been taken to include detergents in fuel, unfortunately, they DO NOT contain enough to keep an engine free from deposits.

A simple titration test will reveal this. This involves using a primer chemical with the additive mixed with fuel and then adding drops of an activating chemical until the sample changes colour. Pump fuels will change colour after 1-2 drops on the titration test whereas a standard PBA cleaner may average around 6 drops. Both AR6400 and AR6400-D exceed 50 drops.

How You Can Verify Our Cleaners Work? – Our Challenge to You:
If you own a petrol vehicle then before adding our product, remove one of the spark plugs from the engine and shine a torch down the spark plug hole. You will notice that the top of the piston is black and coated with a carbon build-up. Similarly, the valves and other parts of the combustion area are likely to be in a similar condition. Now add one of our professional cleaners with a full tank of fuel. The carbon will start to dissolve and will be removed through the normal engine combustion process.

The Challenge….
After you are half way through that tank of fuel, remove the spark plug again and shine a torch down the spark plug hole and re-check the condition of the top of the piston. You will notice that much of the carbon is removed and that you will clearly see signs of a cleaner piston and without deposits. After a full tank of fuel, all you will see is a clean piston with no carbon deposits. Not only does it thoroughly clean the entire fuel system but it also removes all carbon deposits.

There are many enthusiasts on automotive forums that provide fuel additive advice, with many of them having copied or referenced our literature. We have even had in depth telephone conversations with some. We were the first to publicly reveal the importance of Polyether amine chemistry in fuel cleaning chemistry back in 2007 when we released BG44K to our customers and then BG244 in 2008.

Will any of our cleaners potentially damage any part of the engine or fuel system? No, or we wouldn’t still be in business. We don’t put such products to market that we haven’t already examined and tested ourselves. Each product comes with full support after sales support. The detergents have been fully EPA tested at increased dosage rates to ensure there is no potential damage to fuel system components or seals.

What happens to the carbon? PEA combined with PIBSA and other accompanying chemistry use a dispersal technology that dissolves and removes deposits particle by particle, thus reducing the risk of pulling sludge or deposits through the system. Much of the removed or dissolved carbon is burned and converted to energy just like the fuel.

What if I have a specific issue with a blocked DPF or carbon on the turbo etc.? The chart below will help you identify the cleaning potential and other benefits that our core products provide, and thus ensure you select the correct product(s). Or, read the appropriate article (links below) for further detailed information. Alternatively, just contact us via email or telephone for further advice.


Treatment Benefits & Application Guide
DPF Cleaning & DPF Cleaners
Turbo Cleaning & Turbo Cleaners
EGR Cleaning & EGR Cleaners
Do Fuel & Oil Additives Really Work?
Are Fuel Additives Safe?


Our guarantee to you is that you will receive professional care and with the most suitable solution, if any, recommended for you. We offer a full risk free, 60 day, no quibble, money back guarantee. We are the only company in the UK that provide this level of care and guarantee on fuel system and engine cleaners.

How do I request a refund if I am not entirely satisfied? Just email us at with your order details and a quick note and we will process the refund in full within 48 hours. As you put your trust in us we will go that extra step and offer free advice to help you resolve any particular problem you are trying to rectify with your vehicle. This is completely optional.

If you have any questions about the above or require any assistance then please don’t hesitate to contact us.


We have accumulated thousands of testimonials from all type of customer. From end users, corporate and fleet operators to Master mechanics, research professionals and established academics in the field of chemistry, engine combustion and tribology. Not forgetting the OE vehicles manufacturers that already use additives to minimise their warranty liability.

Below are just a few:

ARCHOIL© AR6400 – “Hi, recently purchased your Archoil Professional fuel system cleaner for my Mini Cooper S. Very impressed by the extra boost it appeared to immediately give to the supercharger.” Nick

ARCHOIL© AR6400-D – “Hi guys. I am new to these forums but have found them a very interesting read. I have had the same problem as most on here with the car showing more warning lights than a jumbo jet out of fuel. Because of the constant selection of Limp home mode, One garage said they would have to take the gearbox apart at the cost of a couple of thousand pounds.

A couple of weeks ago the car wouldn’t start at all. After 5 days of scratching my head and after reading these forums I found out about the EGR Valve and someone said tap it with a rubber mallet, which I did. Hey Presto the bloody thing started. It seemed to me that the slightest bit of dirt
would make the valve stick and because the sensors really couldn’t tell what was wrong all sorts of lights lit up and limp-home mode engaged.

Anyway I have solved all my problems with an amazing product called Archoil. The product was AR6400-D. It is supposed to clean your system including the EGR. I have only had the stuff in there for about 100 miles now and the difference is amazing. I am hoping that before long I can take the rubber mallet out of my boot. Its embarrassing sitting in the Supermarket car park belting hell out of a Jaguar engine to make it go Like most people I am sceptical about products like this but i was desperate and willing to try anything.

Footnote: I am in no way connected to the makers of Archoil. Just an ordinary joe trying to get his car to work efficiently.” Mitch H

ARCHOIL© AR6200 & AR9100 – “Hi, just some feedback on the Archoil products I used on my weeks holiday to Scotland. I added the oil & burner products to my VW Sharan 1.9 tdi 115 bhp, smooth running & returned 45mpg fully laden with 4 adults 2 dogs & luggage. 1500 miles in a week, great products will be ordering again soon. Thanks again.” Richard

ARCHOIL© AR6200 – “I can’t believe how good the Archoil AR6200 additive is. The car runs smoother and getting at least an extra 6mpg around town and only adding 5ml per tank! Looking forward to using the Archoil AR6400 to give it a good clean through. Kind regards, Matt”

ARCHOIL© AR6600 – “Just wanted to say thanks – it has worked a treat and cleared a problem with a stuttering turbo causing a terrible flat spot at 3500 revs”

ARCHOIL© AR6600 – “Hello, just want to say how pleased I am with the Archoil AR6600 turbo cleaner. Recently my VW Passat wouldn’t go past 3k revs without throwing me into limp mode. I’ve had it to garages which have said the vanes in the turbo are sticking and I’d probably need a new turbo. So anyway 15 quids worth of diesel, a bottle of this and a blast down the motorway and it seems to have cleared. The car has never had so much of a kick behind it. Thanks a lot saved me a big mechanic bill.” Liam O

Hi, thanks for the prompt reply. I’ll go for the longer Journey. Perhaps a touch of an “Italian” tune up but keeping within the 3.5k rev limit. I have to say that Archoil products work really well for me in my 2.0d BMW X3. Also the forums / blog are useful in understanding what goes on within and why it
sometimes plays up. Once again, thanks for your help. Steve

“Hello, I’ve driven to south to France to relatives. They have a string of high mileage diesel cars and vans. I had bought a bottle of AR6400-D to use on the trip. However at arriving at hosts home, the discussion of Diesel engines came up. The conversation ended with me gifting them my bottle of AR6400-D.

Their old Renault Megane Diesel with 340,000 km on the clock was completely transformed by your magic potion. The car they had thought was on its last legs. Under 100 miles of driving with archoil in the tank became quieter, faster and more responsive.

My host was so impressed with Archoil, he called his local garage owner at 11pm at night demanding to know why he hadn’t stocked any Archoil.

Good luck, I think you have a new bunch of customers here in south of France. All with diesel cars and fleet vans to operate.” Asim B

Hi Andy, you will be glad to hear on my friend’s Ford Mondeo 2.0L diesel with a DPF (DW10BTED4 engine) it gave a solid 10% fuel economy improvement and restored the car’s original responsive and engine note/noise. Thanks! Regards, Istiaqu

The previous average for the E320 CDI before an oil change plus addition of the additive was 27.5 MPG according to the trip computer. After driving 800 miles with the additive – with the same driving pattern and same brand/grade of oil used – the MPG has climbed to an average of 30.5 MPG – just over a 10% improvement so I’m well pleased. When will you be launching this product and do you have any more info on it you could send me? Regards, Danny

What a great purchase, I have tried a few products and I can honestly say what a product. After just a tank full of fuel what a difference ! The car sounds quiet, crisper on the throttle response and is giving an extra few miles. I fully recommend this to anyone, as they say “Probably the best treatment on the market”. Used on BMW 525 Sport. Please add to your testimonial if you wish. Kind regards, Milan.

Comments: I ordered a tin from you, it arrived quickly. I added it to my seven-year old Suzuki Liana,(47K+) which had started to suffer from EGR engine-management light being constantly on whilst the engine was running. Following evidence from several blogs, I decided to put BG44K to the test. After 170 miles, (about one-third of a tank), the light went out and stayed out!. The engine is sweeter in sound, response and fuel economy. This is the greatest product to hit the market in decades. I will be a regular user at oil-change from now on, and I will certainly recommend you and your product. A motoring claim that actually works, and more quickly than expected. D W Cole
Good morning, I have now been using your products for a few months now and I would like to say… they do deliver!

When I first acquired my car it had done 122k miles and i did not expect major improvements, but after using every 2nd fill I have been able to change from 44 mpg to 48mpg and the car is now at 131K. Thanks! Best regards, K Smith

I purchased BG44K for my merc320cdi which has done 91000miles and after adding it to the diesel it has made a remarkable difference to the cars performance even on the first day. I can only strongly recommend this product. Its the best have ever used. It does what it says. L Douglas

Andy. Can’t see anywhere to write a review on the Web site so here goes. I have nearly used a full tank after putting BG244 in my Seat Exeo 2.0 litre Dsl (143ps). It had done 9500mls from new so should not have been too bad in any case, but after only a few miles it was a different car, quieter/smoother/more responsive etc. I only do about 8/9000mls per year so will make sure I put some in every year from now on. It is brilliant, give it a try and you will be amazed at the difference. This stuff is not your average DIY bull*** crap. Dave C, Oxford

Just to say thank you, and although too early to judge any improvements on car or boat, I am so impressed with your company care, I have sent details to my brother in Guernsey. Regards, M Wiggins

Comments: Can’t believe it, have only done 15 miles of mixed driving (around town, and a short blast on the motorway), and the engine has stopped “juddering” when idling. Will leave further feedback next week, if that’s alright. Fingers crossed. R Dunn

I’m just writing a quick email to let you know the results on using your diesel treatment, received on the above order number. We recently bought a low mileage 2010 Kia Sportag 4×4 with 6k miles on. The Kia dealer said that an elderly gent had owned it since they supplied it and it had been used for pootling around in. When we got it home and started using it, it felt like it needed a really good clear out. I gave it a motorway run but it was still hesitant, especially when setting off in 1st and then moving up to 2nd and so on. Anyway, I used it as instructed. Put it in the tank and then filled up. I felt a difference in just a few miles but couldn’t quite believe it and thought I might just be wanting it to work too much so I waited until I had driven 250 miles and then I took my husband out in it. He couldn’t believe the difference! It is now smoother with no hesitation at all and now feels like the new car it should feel like. We are so pleased and so I thought that I would let you know. Thank you, S Jones

All I can say is WOW!!! After 1/2 tank of gas I have a noticeable increase in power and reduced engine clatter. Seriously, my engine runs and sounds sweet…almost like the Nissan engine was yanked and someone dropped a BMW inline 6 in there. Well, maybe that’s a bit exaggerated, but it’s quite a bit smoother and better sounding. I also expect an increase in gas mileage, but I won’t know for at least a week after I fill up and drive normally on the next tank.

Andy, as you know I have been in the trade for a long time, even longer than you! I am always amazed by your level of knowledge and expertise. Would you like a job? I know your job is a tough one as there is so much crap out there and its refreshing to have a supplier that will only provide the very best solutions for me and my customers but also with the support to match. We continue to use you for this reason. Much appreciated, B Roberts (Master Mechanic)

Archoil AR6400 (petrol) can be ordered HERE

Archoil AR6400-D (diesel) can be ordered HERE

PLEASE NOTE: We are no longer answering questions on this blog. If you would like to ask a question or leave feedback then please do so on our new forum HERE.

117 Responses to Archoil AR6400-D & BG244 for Diesel

  1. Pete May 13, 2013 at 9:12 pm #

    I have a Ford Focus C Max 1600 TDCi on an 04 plate. Its got all the above symptoms. It periodically lacks power in low gear, can be smokey and splutters. The engines also pinking .The car is mainly used on short journeys. What do you recommend ?

    Hi, I would first recommend AR6400-D to clean the system as a process of elimination. Regards, PE Team

  2. faruk May 13, 2013 at 5:50 pm #

    hi ihave astra 1.7cdti 55 plate and the management light comes on after 10 miles or on motorway and i loose turbo power and i have the aa and they said it was leak in the pipes but had this check out but is not this so this product work

    Hi, please email us as and we’ll go through the possible causes. Regards, PE Team

  3. john farley May 13, 2013 at 12:20 pm #

    I have just aquired a Vauxhall Insignia , reg no AP60AWU. It has 8000 miles on the clock. having had a Merc. C200 cdi ( and having had proplems with dpf system , Transfering deisil to the Eng. oil.) Would you please advise on treatment for the Insignia. Regards J. Farley.

    Hi John, read our new article HERE. Regular use of AR6400-D and AR6200 are proven to help but also, heat is important. Make sure you get the revs up now and then to help generate heat. Regards, PE Team

  4. Sal April 30, 2013 at 6:10 pm #

    Hi will this be ok for my citroen c4 1.6hdi 2007?? Thanks

    Yes, it will be fine. Regards, PE Team

  5. Ian April 15, 2013 at 2:40 pm #

    Hi there, I’m running a Ford Mondeo 2.0L TDCi with 74K miles. When your just cruising along feathering the throttle the car sometimes misses a little like it’s dying and it’s a bit smokey when your hard on the accelerator. Which of any of the products would you recommend.

    Hi, I would first try AR6400-D as a process of elimination to help clean the system through. Also, have the EGR system checked for excessive build-up. Regards, PE Team

  6. Steve April 6, 2013 at 12:06 am #

    Hi, I have a BMW520DSE e60 2007 (163BHP engine), turbo was replaced at 95K. The car is suffering from some hesitation and increased fuel consumption. Any recommendation as to which products I should use?
    Are these available at any retail outlets around long eaton / Derby area.

    Thanks Steve

    Hi, I would recommend AR6400 followed by regular use of AR6200. Regards, PE Team

  7. phil March 26, 2013 at 10:25 pm #

    does this product help clean the DPF ?

    Hi, read our article HERE. Regards, PE Team

  8. YORKY EXILE March 22, 2013 at 7:29 pm #

    I have had problems with start up from cold on my 1.9 Diesel Renault Kangoo 2001van, I have been told the glow plugs are OK and the problem could be the injectors, would your product cure this problem and which one would you recommend

    Hi, it will if clogged injectors are the cause. Regards, PE Team

  9. gary pharoah March 16, 2013 at 3:49 pm #

    had a problem with my vauxhall corsa 1.3 cdti 54 plate black smoke poor acceloration jubbering loss of power put your product in filled tank what a great product it is car is spot on would reccomend your products to anyone

  10. Robert Wells March 14, 2013 at 12:17 pm #

    Hi. I have an Avensis 2.2 D4d T3-x Engine No 5100305 . For the last two months I have noticed a noise from the turbocharger between 1600 and 1800 rpm that seems to be increasing. I’m told by the garage it is possibly a carbon build up on the exhaust side of the fan blade. Will any of your products remove this build up of carbon.

    Hi Robert, i would recommend reading our article HERE first. Kind regards, PE Team

  11. phil March 10, 2013 at 2:21 pm #

    Hi…silly question this may be! what actually happens to the carbon deposits ? do they simply go through the system unnoticed, or can they clog up further down the system?(a bit concerned about the dpf !)

    Hi, they are broken down particles by particle, disolved and then combusted. It is important to understand that carbon is still a fuel, but just solid rather than liquid. With the correct catalysts it will burn and combust just like a liquid fuel. Regards, PE Team

  12. Hywel Lewis March 9, 2013 at 10:16 am #

    Hi, I have recently bought a Renault Megane 1.9 dci which runs well but idles a bit roughly when warm and a bit flat mid range – is it ok for dci engines? I seem to remember Renault not recommending the use of any fuel additives.

    Yes, it is completely safe to use. Regards, PE Team

  13. karl March 4, 2013 at 9:22 pm #

    Hi i have a 04 vauxhall combo van 1.7 cdti isuzu engine, its done 128,000 mile and recently wont start when at normal operating temp, starts fine when cold, or when left for a while to cool down it will start. While trying to start it when hot you can hear the engine trying to start, Ive been told its the injectors, while driving it doesnt miss a beat, if it is the injectors will BG 244 help? Regards Karl

    Hi, BG244 or AR6400-D will help if the issue is related to fuel system deposits. Regards, PE Team

  14. Rae murray February 25, 2013 at 7:41 pm #

    Hi I have a BMW 3 series tourer that just started to die on me and sounds very rough idling, I have been told that an injector is the problem, would your product fix or help with this, or do I need to buy new injectors?

    Hi, it will help if the issue is the result of deposit build-up on the injectors. Regards, PE Team.

  15. Alan Rogue February 25, 2013 at 12:02 pm #

    Hi , i have a Toyota Rav4 diesel2.2 D4D-CAT on a 2006 , 125,000miles.
    from time to time i get a plume of white/blue smoke from exhaust for 10 seconds or so, then its fine, i check the oil and its not using any , but its usually when i do short trips of 40/50mphwhen the smoke appears. it is due a service soon , what do you suggest?

    Hi Alan, I would suggest a bottle of AR6400-D as a process of elimination but this could be a leaky injector or breather system blockage. Regards, PE Team

  16. David Eggleshaw January 20, 2013 at 5:31 pm #

    Hello I have a BMW R1200R motorcycle (boxer engine) is it ok to us your product?

    Hi, yes I would use Archoil AR6400 100ml. Regards, PE Team

  17. S S Sagoo January 10, 2013 at 10:02 pm #

    Hi, I have a zafira 2006 1.9 CDTI. At about 2000 rpm it shudders a bit but once over 2200 it stops and runs fine. Which cleaner should I add?

    Hi, I would first try AR6400-D. Regards, PE Team

  18. Bob Langley January 10, 2013 at 6:22 pm #

    Is it necessary to run the engine at high revs (been advised to “blast it down the motorway”) for your product to be effective?

    Hi, with fuel system cleaning it doesn’t matter. However, with combustion area or post combustion area cleaning the key is heat. So any driving style that helps generate heat will assist in burning off the deposits. Regards, PE Team

  19. Peter January 9, 2013 at 10:42 am #

    Hi, Ive been using your product for quite long on my diesel and petrol car too. Just wondering, whether if I buy Forte and use it, empty the tank, how long should I wait til I put the next Forte (or BG or anything else, whichever you recommend) to the tank? I do mostly city (london) runs and my car smokes bad (currently lookin into it, might b turbo too)
    Thank you!

    Hi, it would be easier is you called us to discuss as the smoke could be from a number if different areas. Regards, PE Team

  20. Joanne December 28, 2012 at 11:31 am #

    Hi, I have a 2006 golf, 20lt TDI. Car goes well untill I reach 80mph then loss of powes, feels like the turbo has cut out, turn engine off then back on and power is back to normal, usuall only travel short journeys. However this week made a long journey and power didn’t cut out untill 100mph, (don’t normally drive that fast, just testing the car). What would your advice be, it’s driving me mad.
    Thanks Joanne

    Hi Joanne, this could be a number of different causes. A high strength polyetheramine fuel system cleaner like AR6400 or BG244 would be a good start as a process of elimination but it could also be a degraded sensor, emission control system blockage or similar. Regards, PE Team

  21. Lee C December 26, 2012 at 11:46 pm #


    Is AR6200 suitable for use on a RAV4 T180, this is fitted with DPF, this vehicle uses a 5th injector to inset diesel to exhaust /DPF area to raise temperature for soot burn off.



    Hi, yes it is fine to use. Regards, PE Team

  22. Ravinder December 17, 2012 at 10:52 pm #

    Hi, I’ve been a fan of your website and products for a couple of years and today I tried the AR6200 in my Insignia. Only problem is I accidentally poured 20 mls into roughly a full tank which I assume is around 65 litres or so. Now will this cause any issues as this is 1/3 more than the strongest ratio.
    Thanks Rav

    No, it won’t do any harm at all as its been tested safe at 10x the recommended dosage. Overdosing won’t provide any additional benefits though except in high ethanol or bio-blended fuels. Best regards, PE Team

  23. faustino Orlandi December 17, 2012 at 2:04 am #

    Hi, I have a Peugeot 807 2.2 HDI 85.,000 miles. The light management comes on and off very frequently, the message displayed is “Anti Pollution Fault”, also now “Diesel Additive minimum level” is displayed. I put 3 litres of additive 3 months ago, I thought it would last longer than that. The performance of the car has deteriorated drastically, especially when the light management is ON. The car stuggles to do 50 miles per hour on any uphill roads, I can get the car to run 70mph on a flat road, just about.., acceleration is poor too…
    Would any of your additives help to improve the performance/running of the car and, if so, which is the best suitable for my 807? Kind Regards and many thanks….

    Hi, Read our article of DPF cleaning HERE. I would use AR6400-D as an initial clean and then AR6200 to reduce the hydrocarbons and keep the system clean. Regards, PE Team

  24. Simon Frazer December 16, 2012 at 9:19 pm #

    Hi, I have a 2000 (Y) Landrover freelander 120,000 on the clock. it has started to play up, I have changed the fuel filter and cleaned the filters on the fuel pump. The fuel in the tank looks clean and there was very little build up on the filters there has been not changed the performance. It has been to the local garage and they said that the Diagnostic equipment says that I need to replace the fuel pressure sensor, this is my 1st diesel so i have very little knowledge about the TD4 system. i have asked on the Landrover forum with various suggestions.
    Main symptoms are Engine hesitation, poor performance, stalling at junction or at low speed/revs and it sometime sticks at 2500rpm.
    which product would help to clear the fuel system and improve general running.


    Hi, AR6400-D will clean the system. Regards, PE Team

  25. Richard Donoghue December 14, 2012 at 8:24 am #

    Hi I have a Mini Cooper diesel that has developed a flat spot/hesitation between 1 and 2000 revs. Please can you advise if any AR or BR products will help and will they cause any damage? Many thanks.

    Hi, either AR6400 or BG244 will help if the issue is the result of fuel system or combustion deposits. Regards, PE Team

  26. Gary Pritchard December 5, 2012 at 12:33 pm #

    Brought a second hand very low mileage BMW X3 2.0d Sport. Had it serviced at BMW and they wanted £2k to decoke the engine (yellow engine warning light was on and the car had been used for lots of short trips in traffic). Put in a can of BG244. Engine warning light is now off and car runs much better. Fuel consumption is still low 30’s when I would expect high 30’s given I drive a lot on the motorway at a steady 70 mph (ish). Engine warning light still comes on from time to time but car benefits from a good red line rush thru the gears and that usually fixes it ! I have just finished the tank which had the BG244 in, is it too soon to add another can in the hope that it will completely clean out the coked up engine?

    Hi Gary, I would be more inclined to use a fuel catalyst such as AR6200 with every tank to continue the cleaning process and reduced the amount of hydrocarbons being produced in the first place. It also offers the beneift of improving the combustion and this reducing particulates when the engine is cold. Regards, PE Team

  27. graham December 2, 2012 at 3:59 pm #

    hi I have a 1.4 toyota yaris diesel can your product be used in a car that is mostly used in a town.

    Hi, yes, AR6200 is perfect for start/stop journeys. Regards, PE Team

  28. Papa lazarous November 30, 2012 at 11:53 am #

    I have an 07 vauxhall vectra v6cdti , with 92,000 , will your diesel treatments be ok for this engine ?, I’ve heard these engines don’t like certain fuel additives ??

    Hi, yes they will be fine. They are non corrosive or damaging when used correctly. Read our article HERE. Regards, Pe Team

  29. kevin lewis November 6, 2012 at 9:44 pm #

    hi,i have a peugeot expert 1.9d van that as lost power especialy on hills,when the van hits a hill it dont want to acceleration and there is white smoke coming out the back.i want to know if your product will cure this or not as i have just ordered some.what do you think i should do.

    Hi, it will help if the symptoms are the result of fuel system deposits. Regards. PE Team

  30. John Oakes November 3, 2012 at 11:17 am #

    First of all I refer to my original comment (number 51). Using AR6200 certainly made a difference to that vehicle. It was noticeably smoother after around 100 miles and acceleration was definitely improved.

    Now to my new question:-
    I’ve now replaced the 400,000 mile Octavia with another Octavia with more ‘sensible’ miles (129,000). I’m continuing to use AR6200 but I wonder whether a one-off treatment of BG244 would be beneficial? My new car has done 5,000 miles since I bought it and has had AR6200 used at every fill up. Due to the higher than average use am I getting ongoing benefit from AR6200 that BG244 would only produce as a single treatment? Now that we are coming into winter the engine is often not switched off for 10 hours at a time so that the heater is running. A fair bit of this time is with the engine at idle so obviously it accumulates more deposits. What thoughts or advice could you give in this situation?


  31. George Smiley October 30, 2012 at 9:33 am #

    We run 2002 Mercedes E220cdi auto, 150,000m and a 2004 Spinter 316 campervan 2.7cdi man, 30,000m on bio 50/50 fuel mix. The egr valve on the car was very heavily clogged and inlet manifold covered with sooty/oily deposits. Car oil consumption 1lt=2000m, van oil use nil. The car oil consumption is too high but it runs very well and returns 50+ mpg. Would BG244 help keep this clean and what, ongoing treatment product, would you recommend for both vehicles please.

    Hi, firstly clean the EGR manually. Then use either AR6400 or BG244 in with the fuel followed up by AR6200 to keep the system clean and reduce the amount of recirculating hydrocarbons. Also use AR9100 in with the oil as this should help reduce oil consumption and prevent polymerisation of oil in the intake system (including the EGR). Regards, PE Team

  32. brian October 29, 2012 at 4:21 pm #

    do you mean ar 6400 as I cant find ar 6500 on your web site

  33. brian October 28, 2012 at 8:22 pm #

    Hi, I have an 09 mazda 6 2.2 D sport the particulate filter light has just come on and started flashing. can you recomend a product to resolve my problem.

    many thanks in antisipation Brian

    Hi, AR6500 followed up by AR6200. Regards, PE Team

  34. charlie turner October 27, 2012 at 1:16 pm #

    Hi i have a peugeot 2ltr 307hdi 136bhp the warning sign keeps showing deisel addative low the fuel consumption seems to be higher than usual what product should i use and what is the price

    Hi, either AR6400 or BG244 will clean the system and AR6200 will keep the system clean and improve economy. However, you will need to have the FAP fluid topped up. Regards, PE Team

  35. Bill Herbert October 23, 2012 at 3:40 pm #

    Hi, I have a Fiat Qubo (auto) bought new (10 plate) with less than 10,000 miles. It is serviced regularly by Fiat and I get an average milage over 45mpg (occasionally over 50mpg) which doesn’t get up to their published figures; which, I realise are done on a rolling road. However, I would like to keep the vehicle in good running condition because being over 70 this will probably be my last vehicle.
    Thanks for your assistyance. Bill.

    Hi Bill, I would give the AR6200 20ml sample bottle a go as this will improve the quality of combustion and improve economy, particularly if you are doing a lot of stop/start or cold start driving. Regards, PE Team

  36. Pete Hobbs October 10, 2012 at 10:56 pm #

    I have purchased a focus 1.6 TDI titanium on a 12 plate it has done just under 6k miles. they say prevention is better than cure so i was wondering if you could advise me on what additive to use from the start to prolong efficient running.
    Kind Regards

    Pete Hobbs

    Hi, AR6200 in with the fuel and AR9100 in with the oil. Regards, PE Team

  37. bill harper October 2, 2012 at 3:10 pm #

    hello, i drive a 2.5di transit with 150,000 on the clock,starts 1st time on 1/2 a turn but wont tick over but is ok when hot . would your additive,or one of them be beneficial as it smokes like a b=== when revved from cold,it gives a symptom similar to overfuelling.

    Hi, I would recommend AR6400-D in with the fuel and the Bardahl engine oil flush (followed by an oil and filter change) to help restore any lost engine compression. Regards, PE Team

  38. Terry October 2, 2012 at 10:07 am #

    Hi I put some BG244 in last week and was wondering if it is ok to put some specific DPF cleaner in now, still on the same tank of fuel.



    Hi, the DPF cleaner will need to be added to a fresh tank of fuel. Regards, PE Team

  39. Richard September 27, 2012 at 9:31 am #

    I have a seat ibiza ecomotive on a 58 plate, the DPF light is on and have done all the usual things, run the car at high revs for 15 to 20 minutes, I only do long journeys to work daily so no short hops, will the BG244 help with this? and would i benefit from regular treatments due to the high mileages?

    Hi Richard, I would look at AR6400-D followed by a specific DPF cleaner and then regular use of a fuel modifier such as AR6200 as this will reduce the amount of hydrocarbons being produced in the first place, whilst promoting passive regeneration. See our article here. Regards, PE Team

  40. Ian bloomfield September 14, 2012 at 2:41 pm #

    Hello I have a mazda5 2007 diesel with 40k on the clock. It sufers from a lack of power periodically and ater reading this thread of questions and and your answers it coud be either a gerneral build up of crap in the engine and possibly the EGR or DPF. If Im right and so are you then the BG244 for a one shot clen followed by the AR6200 for a long term conditiner/cleaner , our thoughts please

    Hi Ian, yes that is a good combination but I would look at cleaning the EGR system manually with an EGR cleaner if its easily accessible. Regards, PE Team

  41. Steve Murphy September 7, 2012 at 7:12 pm #

    My Pug 407 2.0HDi has a problem where if I put my foot down and require lots of torque, the engine management light comes on and it tells me I have a depollution system fault. The car also hesitates at around 1500rpm. I have long suspected a DPF problem, and now I have just failed my MOT on emissions. Will your product help?

    Hi, yes it will help but I would suggest looking at one of the DPF cleaners in–dpf–and-catalytic-convertor-cleaners- as a first treatment. Then follow up with regular use of AR6200 to keep the system clean. Regards, PE Team

  42. Sheldon Botham September 7, 2012 at 1:34 pm #

    Hi I am running a Nissan Terrano 11 2.7 TDI SE P reg. 1996 with 140000 on clock , it is running like a dream I have been regularly adding Wynns Diesel treatment but have been reading up on your product. Would it be an advantage to begin to use your product and if so which ?
    Regards Sheldon Botham

    Hi, it sounds like its running fine and hence there is no need for a shock cleaner of any kind. I would recommend AR6200 as this will keep the system clean, lubricate and improve the efficiency of the engine. Regards, PE Team

  43. Dominic Bennett September 5, 2012 at 10:02 pm #

    Hi , I have an 07 plate Audi Q7 4.2 TDi, 55k miles, but have previously had to replace the diesel particulate filter sensors and also had to have the particulate filter cleaned out as the self cleaning process hadnt worked due to excessive low revving short about town type journeys without any higher speed longer journeys to clean the DPF properly. What product is best to use and how often to try to keep the need to do this again at bay?

    Thanks in advance Dominic

    Hi, for an initial treatment/reactive clean use one of the products here–dpf–and-catalytic-convertor-cleaners-. For proactive maintenance and to prevent any future excessive build-up I would strongly recommend AR6200. The fuel modification technology in this product will lower the hydrocarbons during the combustion process and thus give the DPF a much easier time. It comes into its own during cold startup. It improves the quality of combustion by lowering the temperature at which the fuel can burn so again, the hydrocarbons are much less even on short journeys or when the engine is not yet up to temperature. Regards, PE Team

  44. david clappison August 28, 2012 at 2:46 pm #

    Hi, My 2002 ex-trail 2.2 turbo diesel smokes very excessively with heavy acceleration and it is usually difficult to get through its MOT. Garages blame the EGR valve and possibly the injectors, though when the valve was last done it did`nt seem to make much difference. Mileage is low @ 58000. Test is due in about a week. Would the product be of any benefit in such a short time?

    Hi David, we have many products that would potentially help but I would suggest giving a call first so we can help diagnose and recommend the best treatment. Regards, PE Team

  45. James Jacobs August 24, 2012 at 9:46 pm #

    Hi I have a problem with my Toyota Previa 116k i just bought. It can not climb hill thinking is lost of power and also not possible to drive over 50MPH. Today i bought Redex diesel treatment and used for about 20 miles but have not seen any improvement and last week also i bought turbo cleaner and used it. May you show me what to do .

    Hi James, give us a call and we will run through the options with you. Best regards, PE Team

  46. Steve August 21, 2012 at 1:24 pm #

    Hi I have a Volvo XC90 2.4 D5 with 55k miles on.What treatment would you recommend to keep things running okay.

    Hi, we would recommend AR6200 as a regular use product for the fuel and AR9100 for the oil. Kind regards, PE Team

  47. Greg Stephens August 20, 2012 at 7:23 pm #

    I have a VW Passat with 114,000 miles on the clock however, the replacement turbo has only done around 80,000 miles. It was replaced last time for a cutting out due to an over boost, diagnosed as seized veins. Do you think any of your products will help?

    Hi, please see our article here on turbo cleaning and keeping the turbo clean. Regards, PE Team

  48. Greg August 20, 2012 at 3:40 pm #

    Will this help with my VW Passat diesel turbo? The engine has done 214,000 miles. However the turbo, which has done around 80,000 miles cuts out under heavy load, I wondered if it was just clogged veins on the turbo. This is why it was replaced last time.

    Hi, it will help but you need a regular use combustion modifier to reduce carbon on the turbo/EGR etc. For this I would recommend AR640-D followed by regular use of AR6200. Regards, PE Team

  49. brian August 16, 2012 at 1:31 pm #

    my vectra has 100,000 miles i have used your bg244 in my last tank of diesel would it benifit from a second application

    Hi Brian, it is highly unlikely it would benefit from a second can and you would be wasting money. I would now recommend a conditioner such as AR6200 as this will provide ongoing benefits and improvements. Kind regards, PE Team

  50. jethro August 13, 2012 at 12:10 pm #

    Hie i have 2003 X-trial Diesel , which produce a knocking sound on intial take off, but dies as i accelarate , and it produce black smoke , and the consumption on fuel is high. the vehicle is Ex UK . I’m in Zimbabwe how can get hold of AR6200

    Hi, please send an email to Either we or another Archoil dealer should be able to get product to you. Kind regards, PE Team

  51. Ray Furlow August 8, 2012 at 1:09 pm #

    I have a 2006 S type Jag sport with an EGR valve problem caused by carbon build up. Do you have a solution? Thanks

    Hi, there are a number of different ways to tackle this. Please read our article here. Regards, PE Team

  52. Nigel August 6, 2012 at 4:41 pm #

    Will this work on my pt cruiser 2.2 t.diesel

    Yes, AR6400-D will safely remove fuel system and combustion deposits in that engine. Regards, PE Team

  53. ray french August 4, 2012 at 1:51 pm #

    i have a 2002 merc 220 cd tickover is juddery .Will your product help aleviate this.

    Hi, it will the the juddering is the result of fuel system deposits. Regards, PE Team

  54. steve lawrence July 27, 2012 at 1:19 am #

    my bmw 730ld engine management light on, bmw says mass air flow problem, so i replaced egr valve, car driving almost back to normal. e.m. light has stayed on,(emissions limit reached) bmw say dpf blocked, car driving o.k ish, tried numerous stuff, car the same, should i take to garage and then buy your product, is it to late to put your products in, if so what do i use thanks, also fault on glow plugs thanks steve.

    Hi Steve, I would suggest giving us a call as we would require more info so that we can advise in more detail. Kind regards, PE Team

  55. nig July 23, 2012 at 7:49 pm #

    hi will thefuel additive have any detremental effects on the seals or any part of my discovery td5 s engine system. by removing encrusted deposits does this mean worn engine parts will no longer fit snuggley

    Hi, these products will not harm the seals. Regards, PE Team

  56. DAVE W June 25, 2012 at 5:56 pm #


    Hi, AR6400-D and BG244 are both compatible with that engine. Regards, PE Team

  57. Bluebell June 25, 2012 at 4:54 pm #

    my nissan primera diesel has low revs and wont go over 60 mph garage say need new fuel pump but fuel getting through as car still goes will this product clean dirt from the system and make car woek properly Bluebell june 25 th 2012 4.55 pm

    Hi, the product can help if the issue is the result of fuel system deposits. However, fuel pump issues are normally related to damaged or degraded parts so the chances are it will need replacing. Regards, PE Team

  58. barry June 24, 2012 at 1:36 pm #

    hi just to add to my last post sent june 24th @ 1.26, the problems this causes to the performance is the revs drop to 3000 and wont go above and sometimes stalls at junctions, will your product help and which product(s) should i use and how.

    many thanks

    Hi Barry, this is potentially a complex issue. I would suggest giving us a call and we can go through the possible cause and options for you. Kind regards, PE Team

  59. barry June 24, 2012 at 1:26 pm #

    hi my wifes peoguet 308 1.6 hdi 110hp has a depollution system faulty coming up and the amber engine light is on, would your products help this problem, also i have just put in a bottle of comms diesel magic with 3/4 of a tank of fuel, can i put your product in once i have used this tank of fuel.

    Hi Barry, I would suggest you call us so that we can advise further as this could be the result of a number of different issues. Regards, PE Team

  60. Fiona June 20, 2012 at 3:53 pm #

    My diesel car will not allow me to put in a petrol pump – if it is put in it will not allow the pump to start – assuming you put this product in the fuel tank how would you put it in the tank??

    Hi, there should be a factory supplied funnel in the boot. Regards, PE Team

  61. Fiona June 19, 2012 at 5:09 pm #

    how do you put this in the fuel tank with a fuel recognition system? Focus 1.8 TDCI? thanks

    Sorry, but we don’t know what you mean by fuel recognition system? Regards, PE Team

  62. Andy June 18, 2012 at 9:17 pm #

    Hello I have an Audi A8L 3.0 TD quattro s on a 56 plate
    used as a chauffeur car
    The car had done 94,000 in the first five years then i bought it
    I have done 37,000 since Feb 2012 (2 services have been done)and the particulate filter is now on all the time
    i use Castrol Edge oil and every 3 or 4 tanks of fuel fill up with Shell V diesel
    will BG244 help sort this out and what else could i use in with the oil maybe to help prolong the life
    and help clean the engine/exhaust PDF

    Thanks Andy

    Hi, we will be writing an article on EGR cleaning soon. You need either AR6400 or BG244 to clean the fuel system first, then regular use of AR6200 and AR9100 in with the oil. EGR cleaning needs to be done over a period of time as the deposits are usually a combination of combustion-produced hydrocarbons and bypassed crankcase oil. The AR6200 will reduce the recirulating hydrocarbons and the AR9100 will prevent bypassed oil depositing on the intake or emission control components. However, I know that engine well and I would strongly suggest removing the EGR and periphery pipework and clean it manually first. Its not the EGR itself that clogs up but 2 small holes where the EGR output manifold/pipe routes back into the air intake. Kind regards, PE Team

  63. Nick June 14, 2012 at 4:51 pm #

    I’m running an Audi A6 1.9 tdi pd on 100% biodiesel. I appear to have a sticking inject when engine started 1st time each day for about 30 seconds. Would you have any cleaner that could help my problem as I thought bio diesel cleaned out all fuel system deposits anyway. Your advise would be appreciated before I buy.
    Regards Nick

    Hi, Archoil AR640D to clean the system through. Then use AR6200 or AR6300 as a regular use treatment and this will fortify the fuel, keep the system clean, lubricate, improve the quality of the combustion and protect against any biological contamination, which bio-diesel is prone to. Regards, PE Team

  64. mark nevin May 23, 2012 at 4:35 pm #

    i have used this on my peogeout 407
    what a differance this makes fantastic

  65. Dibs May 21, 2012 at 10:58 pm #

    I have a Vauxhall Zafira 1.9 CDTi SRi. The accelaration is suffering intermittently, have had it checked out at a Vauxhall dealer and they say it’s a problem with the EGR Valve.

    Would this help loosen the valve and thus improve performance? If so which additive would you suggest? Archoil AR6400 or BG244.

    Many thanks.

    Hi, have it removed and cleaned manually if its easily accessible. Regular use of AR6200 will provide a better longer term cleaning cycle than a single use cleaner as EGRs are one of the most difficult areas to clean and can take a while. Regards, PE Team

  66. Peter B May 21, 2012 at 10:14 pm #

    Is this ok for a 535d twin turbo with 155k miles?


    Yes, absolutely fine. Regards, PE Team

  67. john morris May 20, 2012 at 7:32 pm #

    I currently own a b7 a4 3.0 litre quattro, this car is now 110,000 miles.
    Could your product make a difference, i have no problems as such…. but pull a caravan and the mpg seems low.

    If there are no particular symptoms or issues then I would recommend AR6300 or AR6200 as this should make a difference. Regards, PE Team

  68. brian May 13, 2012 at 10:15 pm #

    hi, i have a 53 transit duratorque 2.0 diesel 970000miles and a mercedes w202 c180 2000 w reg 75000miles,can you recommend wot product i should use and how much .just done oil change on transit and engine sounds noisy 5w30 fully synthetic was wot we used going 2 do car next thanxs

    Hi, if you are looking for the best results then Archoil AR6400-D in with the fuel followed up with regular use of AR6200, plus AR9100 in with the oil. Best regards, PE Team

  69. Andy Currie May 10, 2012 at 2:48 pm #

    Hi, got a Disco 2 TD5 with 100000 on the clock. I am looking for an injector cleaner and for a product to free up the hydraulic lifters as it appears the are sticking intermittently. Can you recommend the products that I would need. Thanks Andy

    Hi Andy, I would recommend the Archoil AR9100 for the oil and AR6400 or AR6200 for the fuel. Best regards, PE Team

  70. Barry Thompson May 8, 2012 at 6:50 pm #

    Hi, is it ok to use 2 treatments straight after each other? Having problem with turbo vanes. Cheers.

    Hi, please read our article here. Regards, PE Team

  71. paul May 8, 2012 at 8:10 am #

    hi my jaguar x type 2 ltr diesel has tons of power but slight pinking and smoky not done much miles in last 3 months which product should i use please

    Hi, I would use AR6200 and this will clean the fuel system, fortify the fuel and help reduce the smoke. Regards, PE Team

  72. steve May 6, 2012 at 10:01 pm #

    hi do i have to completley fill my tank which is 60 ltr to get the full benefit or can i just put a can in at about 40 litres. thanks

    Hi, it will still work with 40 litres. Regards, PE Team

  73. jimmy duffy May 2, 2012 at 4:44 pm #

    Hi I have a transit connect, which runs rough at start up, (knocking and misfire), after driving for a few minutes knocking subsides and runs fine. have changed heater plugs as one did not heat when i tested them, and have done a leak back test and all injectors leak back different quantities of fuel.I was just wondering after seeing your site if using the bg244 would help, could this be a carbon build up in the injectors. Thanks

    Yes, that sounds like carbon build-up on the injectors. AR6400-D or BG244 should help. Regards, PE Team

  74. Shiraz April 13, 2012 at 11:18 pm #

    Hi,my Audi a4 is fitted with bg244 safe for dpf

    Hi, yes it is perfectly safe for DPF equipped engines. Kind regards, PE Team

  75. zish April 6, 2012 at 1:21 pm #

    i have mazda5 ts 2.0 Diesel. car’s DPF light start flashing. particulate filter been replaced few months ago cost £1800 then done regen. i had tried long journey thing as well but still keep coming back. is any of your prouduct can get rid of this problem and keep P.filter clean.

    Hi, regular use of Archoil AR6200 will help resolve this. Best regards, PE Team

  76. Barry April 4, 2012 at 5:02 pm #

    Hi, I have a 2006 Mazda6 TS2 2.0TD which I am having problems with the DPF…wondering if your additive is ok to use on this vehicle. I understand that this car when refuelled automatically squirts in its own additive according to how much fuel is added….what additive would you suggest ?

    Hi, regular use of Archoil AR6200 will help with this. Regards, PE Team

  77. Jarrod March 31, 2012 at 5:55 pm #

    we use this on our vw golf 1.9 TDI and it certainly does what it says on the tin. It wasnt long after putting this in the tank that the car felt really responsive and generally a great improvement

  78. JOSH January 12, 2012 at 11:00 pm #


    Hi, that is the correct product to use. Best regards

  79. nez December 23, 2011 at 9:40 am #

    Hi I did not get a reply as my question was deleted, wondering why that that was, the question is I have put the diesel version in my tank and after 35 miles the car completely changed , drove better than any merc or bmw i have idriven and its only a peugeot will these results last after tank is emty and tefilled again thanks

    Hi, apologies but we didn’t see the Q. There is no way of determining how long it will take before deposits start to accumulate again except that we know the problem is getting worse as biofuel percentages in diesel increase from 5% to 10%. I would strongly recommend the Archoil AR6200 as a regular use treatment when its released in the New Year. Kind regards, PE Team

  80. nez December 22, 2011 at 8:58 am #

    Hi just ordered a can for my peugeot 406 hdi and was wondering if i need to full tank it, it is a 70 litre tank and also do i fill up first or put the can in thanks

    Yes, use a full can. Add product and then fill up on top. Regards, PE Team

  81. PAUL December 16, 2011 at 11:56 pm #



    Hi, unless you are using fuel conditioner with every tank then we recommend a treatment every 10k miles or service interval. This will help keeps the deposits away and the fuel system/engine running correctly. However, you may not feel a significant difference when using the product. Regards, PE Team

  82. saleem December 15, 2011 at 4:23 pm #

    hi i used bg244 for my diesel toyota when it was full tank (60lit capacity) its work ok? or i need to add another can bg244 when fuel tank is empty? then refill the full? your advice is appreciated. many thanks

    Hi, it will only need the 1 treatment. Regards, PE Team

  83. Barry Davidson December 8, 2011 at 8:59 pm #

    I know very little about the mechanics of cars in general but reading this site and others it would seem that this product is just what i need.
    Is it safe to use on my car a turbo deisel 2006 VAUXHALL DIESEL (VECTRA SRI CDTI 150).
    Would def go ahead an order if I knew there would be no negatives

    Hi, it is safe for that vehicle. Regards, PE Team

  84. Andy Gosden November 29, 2011 at 10:49 pm #

    Hi, Is it safe to use the BG244 treatment in a 2007 saab 1.9DiT engine with the Deisel Particulate filter (DPF). I have recently purchased a saab with 80.000mls on the clock and am wondering if it will benefit from this treatment.

    Hi, yes it is completely safe to use. Regards, PE Team

  85. Paul October 22, 2011 at 10:05 pm #

    Is this OK to use on a bmw x3? 2007 reg



    Hi, yes is fine. Kind regards, PE Team

  86. Laurence October 14, 2011 at 7:23 am #

    Hi I recently use wynn’s diesel system treatment for my audi a3 1.9 tdi, in case if there’s no improvement, is it ok to use BG244 after the full tank being used up or is it better to run more miles first? thanks.

    Hi, yes, just ensure the fuel with the Wynns is comsumed first. Kind regards, PE Team

  87. Darrell October 7, 2011 at 1:48 pm #

    Hi a have a toyota hilux 3.0ltr d4d,i ran this fir six months on bio-fuel and it was fine,ive gone back to deisel now and its plying up its ok for 20 minutes but then starts to get noisey and eventually loses power and revs,would your additive clean the system before i start taking it apart thanks.

    Hi, yes the BG244 will restore this providing there is no damage to pump or injectors. It is most likely biological contamination causing a restriction in the fuel system. When using biofuel it is important that its fortified with the correct additive pack to protect against gelling, waxing, biological and chemical contamination. Regards, PE Team

  88. Chris Durham September 23, 2011 at 9:06 pm #


    Will the product deglaze cylinder bores on a canal boat diesel suffering from light use? How much would I need for my 40gallon (180 litres) tank?


    Hi Chris, you are going to need a compression restore product. Please call us to discuss. Regards, PE Team

  89. Jerry September 23, 2011 at 7:05 pm #

    My motor home has a Cummins ISC Diesel with 87,000 miles. It has performed flawlessly for the entire time I have owned it. I only recently became aware of BG 244 treatment and would like to try it. Right now, my fuel tank has about 60 gallons (100 gallon capacity), and my question is how best to introduce the 244 for maximum effectiveness. 1) Pour in two bottles and take the MH on one or more short trips over a couple of weeks. 2) Drive the MH to get the tank to near empty, and then pour in two bottles and add about 60 gallons of diesel. 3) After doing step 1 or 2, drive several short trips over a couple of weeks, or drive on a long trip (850 miles) which we plan to do in about a month. Your product comes very highly recommended and I would like to use it to its maximum benefit. Thanks!

    Hi, I would add 2 cans to approx 120 litres of fuel for the best results. It will still work with either short or long trips. Best regards, PE Team

  90. Karen Pepper September 14, 2011 at 11:12 am #

    I am the owner of a Landrover Defender 300tdi 1994 (Diesel), have had it since new and have clocked up 161,000 miles. Recently, lots of sooty smoke on moterway run, OK local driving. Would your BG244 help cure this?

    Hi, yes if its a result of deposit build-up. Regards, PE Team

  91. Robert May 21, 2011 at 2:49 pm #

    Many modern diesels have trouble with the EGR valve clogging up; will BG244 clean out the EGR valve?

    It will help providing there is sufficient temperature in the exhaust gases. This differs from engine to engine. Regards, PE Team

  92. steve lee May 19, 2011 at 9:15 am #

    Will BG 244 aid the removal of glowplugs on a 98 mercedes c250td which are notorious for snapping due to carbon build up?

    Hi, yes it will. Regards, PE Team

  93. john ford March 30, 2011 at 9:31 pm #

    hi, does BG 244 clean the diesel turbo vanes? my mondeos heater coil lamp comes on intermittently due to carbon build up in turbo and wonder whether it could eradicate the fault.

    Hi, yes it will but it will take more than one treatment to remove the carbon fully. Regards, PE Team

  94. terry March 27, 2011 at 8:19 am #

    Hi,I have a 2008 peugeot 207cc diesel which has done 15k, it does 15-20% less m.p.g. than the manufacturer states,it seems to run fine and passes the emmissions test with flying colours, the dealer says there is nothing wrong with the engine its proberly how i drive it, i dont agree would you recomend BG244 or BG248 ,Thanks Terry.

    Hi Terry. Vehicles seldom achieve the manufacturers claimed MPG as these tests are conducted on dyno’s in controlled conditions. BG244 will help restore any lost MPG by cleaning the fuel system and removing deposits. However, I would do a little more research to understand what MPG other owners are getting.
    Best regards, PE Team

  95. Simon Hallett March 26, 2011 at 10:52 am #

    I’ve put a can of BG44K in my 1995 BMW E34 525, and filled up , but then realised the tank holds more than 75 litres (max capacity is 80 litres). Will this ‘over-dilute’ the BG44K and make it less effective? Do I need a second can or will the one be ok nonetheless?


    Hi Simon, no it will still work fine with that dilution. No need for a second treatment.
    Regards, PE Team

  96. Iain March 17, 2011 at 2:06 pm #

    My BMW 520D has a clogged Diesel Particulate Filter that is preventing regeneration. Will BG244 help.

    Hi, yes it will but you also need to ensure that the engine has a chance to get up to temperature to burn off the particulates. Regards, PE Team

  97. Mark Walton March 12, 2011 at 10:39 pm #

    Hi, im thinking of buying the BG 244 for the first time, just wondered after the first use at what mileage intervals should it be used again and also does it go out of the system when you run your fuel low.

    Cheers. Mark.

    Mark, approx every 10k miles for the BG244. regards, PE Team

  98. mike March 1, 2011 at 4:51 pm #

    I have just used bg 244, Im going to flush engine with bg quick clean then use motorsilk engine treatment with new oil, would you also recommend using bg moa.

    Hi, no need to use MOA with Motorsilk. Regards, PE Team

  99. TOM February 27, 2011 at 4:00 pm #

    i used bg244 and my car is much better. what is the difference between forte and yours. i read forte clears the injectors. does bg244 do everything forte does plus remove the carbon. thanks

  100. GT February 19, 2011 at 1:49 pm #

    Hi, Is the BG244 compatible with the DPF on my Focus TDCi?

    Yes, it is safe to use on all vehicles fitted with a DPF. Regards, PE Team

  101. john mulrine February 16, 2011 at 3:00 pm #

    is bg244 ok for my 2003 saab 2.2tdi diesel?

    Hi, absolutely.
    PE Team

  102. TOM February 6, 2011 at 10:58 am #

    also, is it safe to use millers exomax. e.g. if i used bg244 once a year when i do my service, then also use millers between that time.

    Yes, no problem, PE Team

  103. TOM February 6, 2011 at 12:47 am #

    i used bg244 and my car is much better. what is the difference between forte and yours. i read forte clears the injectors. does bg244 do everything forte does plus remove the carbon. thanks.

  104. Syberen Mulder January 6, 2011 at 6:12 pm #

    I’m having a Cummins Diesel Eng.QSB5.9 230 HO installed on my boat. As the total quantity of diesel in my two tanks is about a 1000ltr, I wonder if you can tell me if I can add the BG244 on a 40% full tank and how much to add.


    Hi, I would use 2 cans of BG244 to approx 150 litres or a single 500ml bottle of Motorsilk Diesel treatment to 500 litres.
    PE Team

  105. robert gore December 15, 2010 at 12:35 am #

    Hi i have a renault master turbo diesel ’96 its an iveco 2.5 .pretty smoky and low compression to start. Would bg244 cure this?

    Hi Robert, yes but you will need to tackle this from both ends. BG244 will remove any system deposits from the combustion side but I would also recommend using BG Quick Clean (oil flush) followed by an oil change. It will remove any deposits that are forcing the rings from the bore. It works every time for us when restoring engine compression on diesel engines.
    Best regards,
    PE Team

  106. pete November 23, 2010 at 1:37 pm #

    Hi I have a ford focus 1.8 tdci 52 reg. its a swin to start in the morning when the temp. is freezing or below would bg244 cure this it starts fine if temp. is above zero.

    Hi, yes it will but we have cheaper alternative the the issue is solely fuel gelling/waxing. Please contact us for further info.
    Regards, PE Team

  107. Rea November 22, 2010 at 12:41 am #

    Hi there
    Is BG244 suitable for a 2004 Honda Accord iCTDI and if so, how can I order/purchase from Ireland?

    Hi, yes it is. The distributor for Ireland is
    Best regards, PE Team

  108. A SMITH November 2, 2010 at 2:05 pm #

    I have just added BG244 to my Ford Transit Connect. Can I add BG248 at the same time? Thank you

    Hi, no you can only use 1 treatment at a time!
    Regards, PE Team

  109. ALAN SMITH October 31, 2010 at 12:57 pm #

    Hi, I have just added BG244 to my Ford Transit Connect for the first time. When is it best to add BG248 to the fuel?


    Hi, we will be changing our guidelines shortly but having used the BG244 we now recommend follow up treatments of the Archoil AR6200. This is a very cost effective way of providing a lubricity barrier that prevents further deposit or carbon build-up. If you wish to use BG248 then use it every 1-2k miles.
    Best regards, PE Team

  110. CH October 14, 2010 at 9:06 am #

    Hi, would this product be suitable for all diesels? I drive a BMW 320d E90 and my wife has a Mazda 5 TD 143 bhp. Both are 2006 models.

    Many thanks.

    Hi, yes its fine for all diesel engines.
    Best regards, PE Team

  111. FV August 3, 2010 at 11:28 pm #

    Problem finding somewhere to buy BG products.
    Living in Denmark, so prefering a webshop in EU.


    Hi, unfortunately we are not permitted to sell outside of the UK but I will investigate further to see who can supply you.
    PE Team

  112. mike morgan July 3, 2010 at 1:57 pm #

    Would you recomend I put some BG244 in my 1998 mercedes 300turbodiesel

    Hi Mike, yes it will be completely fine for that engine.
    PE Team

  113. b farrell December 17, 2009 at 10:36 pm #

    put in my tank today volvo v70 d5 only done twentyfive miles and feels like my engine has been chiped very pleased

  114. KonstantinMiller July 7, 2009 at 2:32 am #

    You know so many interesting infomation. You might be very wise. I like such people. Don’t top writing.


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