Removes deposits in the diesel injection system and in the combustion chamber and prevents them from renewed formation. Prevents jet needles from fusing and gumming. Ensures quiet engine running. Protects the entire fuel system from corrosion and wear. Optimises engine performance. Clean engines need less fuel and reduce emissions. For all diesel engines both with and without diesel particulate filters – as a preventative measure or to deal with problems. Turbocharger tested. For adding directly to the fuel tank. Perfectly compatible with all conventional diesel and biodiesel fuels. One filling with the 25mL dispenser (integrated in the cap) is sufficient for 10L fuel. For permanent use every time you fill up.