After reading tons of posts about this subject guess I will have to go with Valvoline 2 stroke oil. I have checked all the shops in this small town and they just do not carry the Opti 2. I was leaning towards that brand,,,, oh well. I actually read a post that said the opti 2 caused a engine failure but who knows conditions. So after this rant what you think of the Vavoline. New engine and going to stick with it. Oh yeah read where some of these mixtures do not like the new fuel mixtures either. Ethanol I think. A boat marina close by sells regular gas , so there ya go. Small touches on the bike going on now so expect a launch maybe next week. gphil