Ethanol free, high octane fuel mixed with Husqvarna's best synthetic blended oil. The best pre-mixed fuel option for the best hand held equipment. Fuel does not degrade or oxidize like pump gas and stays fresh for years, solving longer term storage issues. It provides easier, more dependable starts and protects fuel systems and saves carburetors. Use of the Pre-Mixed Fuel & Oil is convenient (no mixing required) and in the long term, will save you costly rebuilds and downtime. (JASO-FD certified)