Husqvarna's ethanol free high octane fuel is mixed with our best synthetic oil blend. Specifically formulated to provide the Husqvarna handheld owner with optimal equipment performance. The fuel does not degrade or oxidize like pump gas and stays fresh for years solving longer-term storage needs. Easier, more dependable starts. It also protects fuel systems & saves carburetors avoiding 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. 50:1 ethanol-free 95 octane fuel and oil mix.