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.

Green bars are the engine efficiency. Conventional diesel on the left is 44% and the the best gas-diesel mix would be 53% efficient. Less heat trasfer and exhaust thermal losses. 1. What if an engine ...