Champion eGuard is a multifunctional gasoline additive formulated for use in gasoline and ethanol blended fuel treatments from E-10 to E-85. It contains advanced corrosion protection additives to protect against ethanol and water in fuel systems. Treat rate is 1 oz/10 gal of gasoline. Cannot overtreat fuel. Suitable for 2 and 4-cycle engines that use gasoline, gasoline/oil and ethanol blends. Not for use in Diesel fuel. Check with manufacturer before usage with all other engines.