Key Features Makes all engines start easily run smoothly improves performance Removes and prevents gum carbon and varnish Works in all engines and in all fuel Helps prevent phase separation by dispersing water throughout fuel as submicron-sized droplets that are safely eliminated while the engine operates Stabilizes fuel and helps rejuvenate old fuel 1 fl oz treats 6 gal of fuel Reduces smoke and all other emissions Keeps fuel delivery system clean Fuel stabilizer/cleansers enzyme gasoline additive small engine formula size 8 ounces Cures and prevents ethanol fuel problems. Improves fuel economy reduces emissions and cleans entire fuel delivery system from tank to injectors and combustion chambers. Removes carbon deposits and helps prevent future deposits. Stabilizes gasoline for up to two years. Treats up to 48 gallons of gasoline.