09/06/2026
What happens when you straight fuel a 2 stroke? Complete destruction! Expensive lesson for this customer with not 1 not 2 but 3 machines all cooked. This chainsaw had not only melted the piston it literally broke up inside the cylinder and melted the crank seals so its in the bin for this engine and new cylinders, pistons, crank seals and bearings for the other 2. When it comes to 2 strokes I prefer stihl HP ultra (the blue one) as ive never had a failure due to fuel while using it. I mix with 91 unleaded experience tells me higher octane in small engines can be a cause for concern. Always keep 2 stroke in a green container and straight unleaded in a red container to avoid costly mistakes