FUEL FIT engine additive BRIGGS STRATTON 250ml. garden machinery FUEL FIT additive 250ml. This specially formulated additive improves performance, not suitable for engines fitted with catalytic converters. BRIGGS STRATTON OPTIMAL ALSO FOR KAWASAKI HONDA LONCIN TECUMSEH RATO To keep petrol fresh, Briggs Stratton offers Fuel Fit additive, ideal for all 4-stroke and 2-stroke engines. This product is particularly useful when petrol or the mixture is left in the spare tank for a long time and can deteriorate. Modern fuels attract moisture and can corrode internal engine parts. Fuel Fit is a metal de-activator that stops chemical reactions caused by dissolved metals in the fuel, protects internal parts against the harmful effects of water separation due to ethanol and inhibits corrosion by forming a protective barrier on metal parts. It contains detergents to prevent the accumulation of dirt and ensures the effective and lasting performance of the engine and stabilises the petrol for up to three years, guaranteeing easier starting.