Stihl MotoMix is our patented premixed fuel, specially blended for ultimate performance. Like a sports drink for your engine, this 50:1 mixture is a combination of premium non-ethanol, high-octane motor fuel and our highest quality Stihl HP ultra oil. Clean and convenient, MotoMix eliminates the hassle of mixing your own two-stroke engine fuel while providing superior performance and lubrication. Plus, we stand behind this formulation by doubling the limited warranty when you include MotoMix with your power tool purchase. Stihl MotoMix contains no ethanol, allowing it to maintain stability for up to two years after the seal is broken so it stays fresh in your equipment during long storage periods. It's no surprise that MotoMix is the official fuel of the Stihl TIMBERSPORTS Series.