Originally Posted by LR Jerry
Most of these two stroke engines are low compression so that they're easy to crank. So unless you've up the compression to around 15:1 don't run premium.
The problem I have is that I used to use regular, but I have been using high octane. Why?
Because the lower octane stuff has ethanol in it and people say that is bad for our engines.
Damned if you do, or don't.