well
Powermaster was great fuel, It made my engines last forever...
I run Byrons 25% gen2, and it works great, lots of power. 11% oil...
Stick with 25% and at least 10% oil, and not more than 14% no matter what fuel you run...
I have heard, never used it, that Werks fuel is really great fuel.....
I have used OD and you can't go wrong with ODonnell.....plus he is a super nice guy from my one experience.....