Quickstor Fuel Stabilizer 32oz. This is a genuine Mercury Marine factory OEM part, not aftermarket.It is for use in all 2‑ and 4‑cycle carbureted and fuel‑injected gasoline engines including cars, trucks, motorcycles, ATVs, snowmobiles, marine engines, lawn mowers, chain saws, string trimmers and snow blowers.Fuel stabilizer for long-term storage of boats, generators, lawnmowers, and other powersports equipment.Prevents regular and ethanol-blended fuel from breaking down and oxidizing.Prevents gum and varnish from forming in the fuel and then settling in fuel lines, tanks, carburetor and injectors.Stabilizes fuel for up to 2 years ̶ 1 oz. treats 5 gallons.