Husqvarna® ethanol-free, high octane fuel is mixed with Husqvarna's best synthetic oil blend with an octane rating: (R+M)/2 METHOD 95. This fuel does not degrade or oxidize like pump gas and stays fresh for years solving longer-term storage needs. Easier, more dependable starts it protects fuel systems & saves carburetors. Avoids costly rebuilds and downtime. Convenient, ready to use, no mixing required. JASO-FD certified premium synthetic oil blend for your 2-stroke air-cooled engine.