I use a chainsaw, mowers, brushcutters, and a small mulcher. What is the best mix? At the moment I am using high octane petrol, and Stihl 2 stroke oil at 25:1, I am worried about damaging my smaller engines through carbon deposits on moving parts. Fuel mixes recommended are rated at: 25:1, 40:1, 50:1. The Stihl oil is recommended at 50:1 but I have only one good jerry can. I run my car on high octane fuel and synthetic oil. It seems to have better torque response with high octane fuel; the gears are not matched well to the small Korean car engine design, high power, but low torque. Any ideas folks?
