Star Tron Gasoline Formula makes engines start easily and run smoothly. It cures & prevents ethanol fuel problems such as water in fuel, or lost power. It also helps prevent phase separation, removes gums, varnish and carbon deposits and will stabilize gasoline for up to 2 years. It works in boats, cars, motorcycles, small equipment or any other 2 or 4-cycle engine.Highlights :Size: 8 OzCures and prevents ethanol fuel problemsHelps prevent phase separationMakes engines start easily, run smoothStabilizes gasoline for up to 2 yearsRemoves and prevents gum, varnish and carbon depositsImproves performance and fuel economyRejuvenates old fuel24 per packDirections : Always add Star Tron just before each fuel fillup. Remove cap and pour the prescribed amount into tank.