Driven’s Carb Defender Small Engine additive cleans carburetors from Ethanol-fuel-related deposits that cause poor performance. It is specially formulated for the needs of carbureted motorcycles, ATVs, watercraft, lawn equipment and other gasoline-powered small-engine vehicles that spend most of their life in storage. Carb Defender’s unique blend features additives that control combustion chamber residue, plus clean and protect surfaces of the fuel system and intake tract. It also restores engine performance and stabilizes fuel during off-season storage. The multi-function formula eliminates the need for multiple additives and one packet treats up to five gallons of fuel.