pwheel
Finis Origine Pendet
Donated my unopened bottles of Ultra to the local Stihl dealer. Thinking back now, I suspect that it's probably just fine mixed @ 50:1, tach tuned right to max rpm's unloaded, & run hard in the cut. Truth be told, I tended to mix & tune rich for the first dozen tankfuls, which is why the excess carbon might have shown up on the spark plug & piston crown.I've run Ultra for years in my 046 at 50:1 and had the same results. Little more carbon than I'd prefer but no issues.