Quicksilver QuickStor Fuel Stabilizer QuickStor Fuel Stabilizer helps prevents regular and ethanol-blended fuel from breaking down and oxidizing. This fuel stabilizer also prevents gum and varnish from forming in the fuel and settling in fuel lines and tanks, carburetors and injectors. Use in 2-cycle and 4-cycle engines Safe for catalyzed engines Stabilizes fuel for up to a year Prevents fuel from breakign down and oxidizing Prevents fuel system corrosion Keeps carburetors and injectors lubricat