RE: how long do you keep your 2 stroke mix?
Interesting point about the degradation of octane. So, for the standard compression two stroke gas engines that we use, is there any harm in using the highest octane gas (assuming the additional cost is not an issue)? I currently use 87 octane gas. If I change to a higher octane level, say 91, do I need to check the tuning on all my engines? I use Stihl HP Ultra oil if that's important.
Thanks,
-Ed B.