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Archoil AR6400 Pro Petrol Cleaner PEA Concentrate

AR6400 is a powerful next-generation fuel additive blended from the latest high-strength polyetheramines that quickly and safely remove gum, varnish and carbon deposits from the fuel system and engine.
Variant Title Product Code
Archoil AR6400 Pro Petrol Cleaner PEA Concentrate - 430ml AR6400 430
Archoil AR6400 Pro Petrol Cleaner PEA Concentrate - Twin Pack AR6400-twin

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RRP: £26.78

Our Price From Excl. VAT: £18.26 From Incl. VAT: £21.91

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Product Description


AR6400 is a powerful next-generation fuel additive blended from the latest high-strength polyetheramines that quickly and safely remove gum, varnish and carbon deposits from the fuel system and engine. Advanced combustion modification chemistry then maximizes combustion performance to help remove post combustion hydrocarbon build-up whilst rapidly reducing harmful exhaust emissions.

AR6400 quickly restores lost engine performance and fuel economy in addition to unique properties that help protect surfaces from further deposit build-up. Molecule by molecule deposits are safely removed from intake valves and piston tops thus improving combustion efficiency and reducing the propensity for pre-ignition. AR6400 is suitable for all 4-cycle gasoline engines, including ethanol blended fuels and biofuels. AR6400 is not suitable for 2-cycle engines. Features/Benefits:

  • Cleans harmful deposits and prevents future accumulation
  • Restores fuel efficiency
  • Restores fuel economy
  • Restores power and performance
  • Smoothes rough idling
  • Lowers harmful exhaust emissions
  • Reduces octane requirement.

HISTORY: The first family of dispersant/detergents were amines with a polyisobutylene (PIB) tail. The PIB tail gave good solubility and the amine group provided surface activity that lifted deposits from the metal surface. However the PIB tail, as a polymer, gave the undesirable effect of stickiness so the PIB amine had to be combined with a fluidizer to ensure that it flowed through the combustion region of the engine and did not build up any residues. The fluidizer was typically a polyolefin epoxide.

The next generation of chemistries combined the fluidizer with the polymeric amine. These are called polyetheramines or PEA. Polyetheramines do not require the addition of a fluidizer and the oxygen content provides enhanced surface activity. PIB amines are still widely used in gasoline and perform well.

However, PEA’s offer improved combustion chamber cleaning efficiency but is considerably more expensive. There is an abundance of supply of PIB amines unlike with PEA; hence the treatment cost is significantly higher. Therefore, PEA’s are not widely found in low cost cleaners or are found in reduced quantities. AR6400 contains the highest safe amount of PEA and accompanying chemistry to safely move deposits.




  • Add the correct amount of AR6400 to the fuel tank first and then fill up with fuel immediately afterwards.
  • Treatment ratio is 1:100 > 1:200. A single 430ml bottle will treat between 43 and 86 litres of fuel. A 5 litre container will treat up to 1000 litres of fuel.
  • Use every 5000 miles or use once and follow up regularly with Archoil AR6200-EU or AR6300.


Product Attachments

View FileArchoil Product Benefits and Application Guide    Size: (1015.82 KB)


Customer Reviews (11)

ARCHOIL© AR6400 / AR6200 / AR9100 Review by Anonymous
“I’ve used AR6400 and now started using AR6200 and AR9100 in my Mercedes ML and SLK. Very impressed with the AR6400 and AR6200 indeed. I have an Aston Martin DB7 Vantage and also now added AR6400 and will add AR6200 after the first tank is finished.” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by Tony
“Hello, I have recently purchased and used your AR6400 product. In the past, my car achieved an average fuel consumption of 34.6 mpg, which for a high performance vehicle, I thought to be good. Having used your product, together with fitting an ITG panel air filter, I’m now achieving 40.6 mpg. It looks like you will be saving me a great deal of money!” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by Nick
“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.” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by J. Gowans
“Just used Archoil AR6400 on my Audi A6 2.5 TDI Quattro (120,000 miles) with great improvement in every area - well pleased with that!” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by S Furnish
“I drive a Renault Megane Cabriolet 1997 2.0 litre 16v F7R 714 engine (66,000 miles) with a JC5 M manual 5 speed gearbox. I have used your AR6400 in the fuel, and have added AR9100 at the last oil change, and I must say, I’m impressed with the results. My question is... would the AR9100 be suitable for this gearbox using Elf Tranself NEP 75W80 oil?” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by Chris King
“My order arrived early today, as prompt as the previous order. Only a small bit of business for you but you seem to give small orders the same service as you would a big one!” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by J. Edwyn
“Hi, just tried the AR6400 in my Mercedes AMG and has resolved the misfire. Used to but 44K but will now use this as it works just as well and is easier to pour into the tank!” (Posted on 05/01/2016)
ARCHOIL© AR6400 Review by Bobby
“Hi, I recently bought Archoil AR6400 Pro Petrol Cleaner PEA Concentrate for a Citroen C3 1.4 Petrol. It would not start without pressing the gas pedal. After having Archoil in the tank for 5 days, it started to start without having to press the gas pedal, I hope it continues to work ok.

I plan on using this cleaner on a regular basis. I have tried all sorts of cleaners from other motor manufacturers, none of them fixed the problem apart from Archoil.

Thanks very much for such an informed website and superb products.”
(Posted on 05/01/2016)
ARCHOIL© AR6400 and AR6400-CR Review by Peter Holdstock
“I have used the standard AR6400 through my Freelander TD4 with 98k on the clock and with excellent results. However, I have noticed that there is an AR6400-CR for Common Rail diesels which the TD4 is, my question is, what it the difference between the two products?

I had great results from the standard (as well as the turbo clean and oil additive), used in combination I have actually improved the performance and mpg from when I bought the Freelander 8 years ago with 29k on the clock.”
(Posted on 05/01/2016)
ARCHOIL© AR6400 and AR6600Review by Rob
“Hi there, I purchased your service pack of AR6400 and AR6600. I have used the AR6400 and the improvement has been amazing, no more limp mode, acceleration unbelievable, nearly through the tank of fuel, 45 litres with about 15 litres left, should I add the AR6600 now or with fresh fuel or do I need to add it at all?” (Posted on 05/01/2016)
ARCHOIL© AR6400 and AR6200 Review by Ian Pallister
“Hi - just thought I'd mention (in case anyone else asks!) that the 'internal flap' on my BMW is not sealing: basically, it's a rectangular bar across the end of the circular opening, so it's trivial to just pour the AR6400 in.

Noticeable difference in smoothness thanks, and I have the AR6200 for follow up regular use.”
(Posted on 05/01/2016)

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