Originally Posted by FieldGrade
I mix 50-1 because Stihl told me too.

The only reason I use high octane is because all the ethanol free around these parts is premium and I'm convinced that ethanol is the enemy of all two strokes.


50:1 because of epa. Older saws and modified saws need more oil.

Stihl used to spec hi test gas. Could have changed.

But like oil mix........must be tuned for it.