- Maximizes engine performance with all grades of petrol - Helps control corrosion, gum and varnish build-up and phase separation associated with ethanol-blended fuel - Helps control moisture and corrosion problems associated with non-ethanol-blended fuel - Cleans up existing varnish and gum deposits from fuel lines, tanks, carburetors and injectors, intake valves and spark plugs - Keeps fuel fresh between fill-ups - up to 3 months, 1 ounce treats 10 gallons - 12 ounce bottle treats 120 gallons - Use in all grades of petrol including ethanol blends - Use in 2-cycle and 4-cycle petrol engines - Safe for catalyzed engines