The ALM Manufacturing MS002 Fuel Enhancer is designed to be used as an additive for petrol and diesel, 2-stroke and 4-stroke engines to preserve fuel when the engine is not used for long periods or when the fuel has to remain in the tank for a long period, for example over winter in a lawnmower. It helps stabilise and prolong the useful life of fuel by protecting the fuel against oxidation and helps ease starting after long periods of no use. It also helps protect engine parts against corrosion. Just mix MS002 Fuel Enhancer into the fuel, 100ml treats 5 litres of fuel.