12 OZ, Fuel Injector Cleaner, For All Fuel Injected Gasoline Engines, Keeps Injectors Cleaned & Corrosion Free For Maximum Economy & Power, Helps Stop Hard Starting, Rough Idling, Stalling & Excessive Emissions, Dissolves Gum & Varnish, Absorbs Water & Prevents Fuel Line Freeze Ups, Treats 14 Gallons.