Pre-Emission Test Treatment

Fast acting Pre-MOT treatment

Reduce exhaust emissions and help your vehicle pass the strict new MOT Emission Test.


Reduces CO and HC emissions.
Reduces exhaust smoke.
Improves combustion, engine performance and fuel economy.
Cleans injectors, restoring ideal injector spray pattern.
Assists cleaning of the entire fuel system including catalytic converter and Gasoline Particulate Filter.


Add one bottle of 325ml to the petrol fuel tank containing a minimum 30 litres of fuel.
Drive at least 50 km on the motorway before taking the vehicle for an official emission test.
Can be used as a curative treatment in the event of an emission failure.
For best results use every 3rd tank filling and use 150 km before MOT test.
Results may vary due to service history, vehicle age and mileage.
Bottle is suitable for capless fuel fillers.
Suitable for all petrol engines including indirect and direct injection and hybrid engines.
Compatible with all petrol system components including catalytic converters and Gasoline Particulate Filters.
For Petrol and bio petrol up to E10.


PN 31164- 12x325ML- EN



The fuel system of a car is highly engineered and extremely sensitive to contamination. This contamination can increase engine noise, exhaust emissions, fuel consumption and reduce lubrication and engine power. Using Wynn’s Fuel treatments on a regular basis will help keep the fuel system clean and the engine operating efficiently, reducing your fuel consumption and cutting harmful emissions drastically. It will save you money and it is good for the environment!