4 oz Bottle. Ideal for winter storage, this premium Fuel Stabilizer keeps fuel fresh for up to 12 months. Blended with corrosion inhibitors, this Fuel Stabilizer is formulated to protect fuel tanks, fuel lines, carburetors and injectors from long-term exposure to the adverse affects of ethanol-blended fuel. It fights deposits that can accumulate as a result of ethanol-produced solvents, and acts as a demulsifier to eliminate condensation in your fuel system. 4 ounces treats 10 gallons of fuel.