A protective product for fuel is an ash-free and self-mixing combination of active agents, formulated by the state-of-the-art additive, fuel and motor technology. It meets the requirements of modern engines, fuels and application conditions. It absorbs and removes water from a gasoline tank and fuel system. It protects the fuel system from corrosion, does not pollute the environment, can be used during a long time, and protects the carburetor from icing. It is tested for compatibility with a turbine and catalysts. Application: for any gasoline (carbureted and with injection systems of various designs) and diesel engines. It is added in a tank at each fueling based on the dosage 300 ml for 60 l of fuel. It is compatible with any fuel additives.