Wynn's Ethanol Plus 11 Oz (325 ml) is a premium fuel additive designed to optimize ethanol-blended gasoline performance. It helps prevent phase separation, reduces corrosion, and enhances fuel stability, ensuring smoother engine operation and improved combustion efficiency. Ideal for vehicles using ethanol fuel blends, this additive protects the fuel system and supports long-term engine health. For gasoline and diesel engines. One bottle treats up to 30 gallons of fuel. Not intended to treat significant amounts of free water.