Gumout Two-Cycle Engine Oil (also called 2-stroke) is for multi-purpose air cooled engines. It is recommended for motorcycles, chains, saws, trimmers, mowers, blowers, edgers and snowmobiles. Two-Cycle engine oil is mixed directly with the fuel. Two-Cycle engine oil unlike regular motor oil, is consumed during the combustion state of the motor. For this reason, it must not only lubricate well, but combust cleanly, to prevent fouling of the engine.