STP® Premium 2-cycle Oil with Fuel Stabilizer 40:1 and 50:1 meets JASO FD certification specifications* and is scientifically formulated for outdoor power equipment to help maintain maximum engine performance. Engineered with anti-wear technology to help reduce friction, its premium formulation helps keep the fuel system clean and smoke exhaust low. Plus, it contains fuel stabilizer to keep fuel fresh during infrequent use. Convenient squeeze-and-dose bottle. Can be used with chainsaws, earth augers, and 2-cycle generators, and other air cooled 2-cycle gasoline powered small engines (refer to owner’s manual).