Fuel additives keep your fuel optimized, protect your fuel system and remove leftover deposits that rob your engine of peak performance and efficiency. Part of Quicksilver’s comprehensive three step fuel treatment system, Quickstor is a long terms fuel stabilizer that’s easy to use—simply pour it in the tank. Each ounce treats 5 gallons and prevents regular and ethanol-blended fuel from breaking down and oxidizing. For use in all 2‐ and 4‐cycle carbureted and fuel‐injected gasoline engines.