Designed for use in all diesel engines - compensates for latest low-sulfur fuels. Promotes better fuel combustion and fuel system lubrication and provides faster ignition, reduced detonation and smoke, improved efficiency. Powerful high-temp detergents to clean fuel injectors and lubricates O-rings and seals to increase injector pump life, reduces ring friction. Contains cetane booster for added power benefits. One 355ml bottle per tank-treats up to 100 gallons