All-In-One Diesel Additive Features: The one diesel additive that does it all - boosts cetane rating, protects valves, stabilizes diesel chemistry to prevent formation of harmful gum, resins and acids Corrosion inhibitors keep fuel pump, water separators, filters, injectors and fuel lines free of rust and pitting Special cleaners keep fuel injectors free of dirt and deposits 1 fl. oz. treats 5 gals. of diesel