Fuel Stabilizer

Special overwinter formula

Wynn's Fuel Stabilizer is an additive for petrol/LPG engines to preserve the fuel when the engine is put out of service during a long time or when the fuel has to remain in the tank during a long time.

  • Prevents the degradation of petrol and facilitates engine starting after periods of extended shut down.
  • Preserves and stabilises the fuel.
  • Protects the fuel system against rust and corrosion.
  • Prevents the formation of deposits in the fuel tank and filter.
  • Forms a protective lubricating coating on the valves and valve seats.


For all two and four-stroke petrol engines, hybrid and LPG engines. Recommended for: car engines, scooters, motorbikes, boats, outboards, jet skis, generators, pumps, plant, agricultural, rescue and emergency equipment, etc.
Also specially recommended for classic cars.


One bottle (250 ml) treats 250 litres of petrol.
Add 5 ml per 5 litres of petrol (suitable for all unleaded petrol and bio fuel to E10).
Protects fuel for up to 12 months of non-use.
For optimal results add Wynn’s Fuel Stabilizer and let the engine run at idle for 10 minutes before overwintering.


PN 23912 – 12x250 ml – EN/FR/IT



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!