Confident engine start in severe winter conditions depends not only on the used oil with a wide range of temperature and viscosity properties, but also on the fuel supply system efficiency. Considering this peculiarities, Daimler AG engineers have designed unique fuel additives which perfectly deal with main performance issues of the fuel systems of gasoline and diesel engines: corrosion, coked inlet valves, increased toxicity of exhaust gases. In diesel engines, the additive efficiently prevents reduced fuel pumping in the system and its freezing in critical low ambient temperatures.