360 Protection Ethanol Treatment - 10ozSTA-BIL In-Season Protection Fuel System Treatment, America&';s #1 Ethanol Treatment, is engineered to combat the negative effects of ethanol-blended fuels. This industry-leading formula prevents corrosion, cleans the fuel system, and prevents the buildup of unwanted gum and varnish; ensuring your equipment will be ready to go whenever you need it. 1oz treats 5 gallons of gas. If using small engine equipment pour directly into your gas can. If adding to a vehicle it is best practice to add STA-BIL In-Season Protection Fuel System Treatment before adding fresh fuel at the pump. This product is designed to be added to the fuel as soon as you get it that way you know the fuel is fresh. This formula will also keep gas fresh for up to a year. Use throughout the season to make sure your engine runs top-notch year-round!Features: America&';s #1 Ethanol Treatment Prevents Corrosion Caused By Ethanol Blended Fuels Increases Engine Power and Fuel Efficiency Effective In All Gasoline, Including Ethanol and Non-Ethanol Engineered For Year-Round Usage - Use At Every Fill-Up Keeps Fuel Fresh For Up To 12 Months