It is funny how some get so bent out of shape over this topic....LOL
My bikes, all my chainsaws, and a small 2 smoker garden tiller run great on Opti2 mixed at 100:1.
Do I think its the very best oil and the one everyone should use for every application..? NO....!
All I know is that so far it has given me good service with my engines and so I continue to use it and like the way it works in my engines.
If I were running very high performance very high revving 2 smokers I wouldnt be using Opti2 @ 100:1 most likely, I'd be using I very high grade oil at the manufacturers recommended mix ratio.
None of my comments about Opti2 are meant to say that its the way to go for everyone or everything, I just speak of my personal experiences and tell my story and results, take it or leave it ... Shrug