Lucas Oil Safeguard, STA-BIL 360 and STA-BIL Ethanol Treatment are some popular ethanol gas treatments. Both brands of ethanol treatments are typically available in most auto parts stores and departments, including O'Reilly Auto Parts, Autozone and Wal-Mart.
Lucas Oil Safeguard is formulated with stabilizers that work with E-10, E-15 and E-85 blends, as well as pure ethanol. Safeguard is completely soluble, doesn't harm filters and prevents rust and corrosion that can be caused by ethanol fuels. The additive also prevents varnish and gum build-up in fuel injectors.
STA-BIL ethanol additives perform many of the same functions. Some of the STA-BIL products also work well for small engines that are using ethanol fuel, including snow blowers, lawn mowers, chainsaws and snowmobiles.