New high-performance, ethanol-free MotoMix fuel mix from Stihl is a premixed 50:1 fuel mixture, created with premium quality fuel with a minimum 92 octane and the protection of Stihl HP Ultra Oil. Fuel eliminates the need to measure and mix. MotoMix is a nonaromatic fuel mixed with a fully synthetic and highly biodegradable two-cycle engine oil. It comes in a 39.5-ounce metal container containing 32 ounces. It is available only through authorized STIHL dealers.