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Wynn's Diesel EGR Extreme Cleaner Aerosol

Wynn’s Diesel EGR Extreme Cleaner is an aerosol product developed for cleaning the air intake system of all diesel engines.
Variant Title Product Code
Wynn's Diesel EGR Extreme Cleaner Aerosol - 200ml wynns-23379
Wynn's Diesel EGR Extreme Cleaner Aerosol - Pack of 2 wynns-23379#2
Wynn's Diesel EGR Extreme Cleaner Aerosol - Pack of 3 wynns-23379#3
Wynn's Diesel EGR Extreme Cleaner Aerosol - Pack of 4 wynns-23379#4

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RRP: £13.28

Our Price From Excl. VAT: £9.96 From Incl. VAT: £11.95

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Product Description


Wynn’s Diesel EGR Extreme Cleaner is an aerosol product developed for cleaning the air intake system of all diesel engines.


  • Provides immediate thorough cleaning of air intake system, air flow sensor, inlet valves, turbo and EGR system.
  • Strong power jet spray to support cleaning action.
  • Dissolves gum, lacquer, tar, carbon and deposits.
  • Easy to use, cleaning takes only 5 to 10 minutes, with a minimum necessity to dismantle components.
  • Restores perfect air flow towards the combustion chamber.
  • Provides a regular and stable idle.
  • Restores or maintains the engine performance and fuel consumption.
  • Eliminates and avoids starting problems.
  • Improves accelerating properties.
  • Reduces black exhaust emissions.
  • Is harmless to catalytic convertors and Diesel particulate Filters (DPF).


  • For the air intake manifold, inlet valves, air flow sensor, EGR valve and turbo of all diesel engines.
  • Also recommended to be used at each service interval to maintain cleanliness.
  • Possibility to use an extension spray tube with multiple injection holes (option).




A. Cleaning of air intake manifold, air flow sensor and inlet valves:

  • Start the engine and let it warm up. Remove flexible hose in the air intake system, situated between the turbocharger/intercooler and the air intake manifold.
  • Let engine run at idle.
  • With warm engine, spray the product into the air intake manifold. Do not spray directly through the intercooler. Spray with short intervals of 1 to 2 seconds each.  After each pulverization, wait until the original rpm is regained and the engine runs stable.
  • During the pulverization, the rpm can go up or down. Diesel knocking can increase.
  • This is due to the addition of liquid and the change in the air/fuel ratio.
  • Do not accelerate!! Even when rpm drops!!
  • Continue until the 200 ml of product in the aerosol is consumed.
  • Let the engine run at idle for 10 minutes.
  • Stop the engine. Put hose back in place.
  • Start engine and drive 5 to 10 km, but avoid overloading the engine.
  • Allow engine to idle again for at least one minute before stopping the engine.

B. Cleaning of air intake system before turbocharger and compression part of turbocharger:

  • Act in the same way, but spray the product in before the turbocharger. Remove the air filter to reach this area.

C. Preventive cleaning of EGR valve

  • If the valve is close to the injection point of the product, act the same way as in A.
  • If the valve is at remote distance to the injection point of the product. use an extension tube (available in option) to get closer to the valve, then act the same way as in A.

D. Curative cleaning of very dirty EGR valve

  • Dismantle the EGR valve (housing).
  • Spray the product directly on the valve, housing and other components, until these parts are very wet.
  • Let the product act a few minutes.
  • Spray again on the parts, until all the dirt has been removed.
  • It can help to remove the dirt with a piece of cloth or paper tissue.
  • Dry the parts with compressed air, cloth or paper tissue.


  • Method A, B, and C Every maintenance (15 000-20 000 km)
  • Method D - At initial first treatment on car with high mileage

Warning Do not exceed 1500 rpm during treatment. Do not spray on painted surfaces. In such case, immediately rinse with water to prevent damage. Carefully follow directions.



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