Special Features: PREVENTS ETHANOL DAMAGE – STA-BIL 360 Protection Ethanol Treatment & Fuel Stabilizer prevents corrosion caused by ethanol blended fuel. Effective in all gasoline blends, including ethanol and non-ethanol, this product helps increase engine power and fuel efficiency. STORAGE – Although this fuel additive is engineered for use in fresh fuel at every fill up, it stabilizes fuel for up to 12 months. As America's #1 Ethanol Treatment, you can trust STA-BIL 360 Protection to keep your vehicle or gasoline-powered small engine equipment running at peak performance. VERSATILE – The 32 oz.