Red Line 70105 Diesel Fuel Catalyst - 1 Gallon Designed for use in all diesel engines; compensates for latest low-sulfur fuels Promotes better fuel combustion and fuel system lubrication; provides faster ignition, reduced detonation and smoke, improved efficiency Powerful high temperature detergents to clean fuel injectors; lubricates O-rings and seals to increase injector pump life, reduces ring friction Contains cetane booster for added power benefits Available in winterized formula, reduces pour-point of typical fuel by 25 degree Fahrenheit