i like to run 91 octang when on all my 2-strokes that dont require 105 or more with red line 42:1. I have tryed amsoil and liked it. i found that it is a little bit thicker than most oil so you shouldnt use as much.

 

I would use the original YAMALUBE at 32:1 oil ratio, and use the highest octane at your loaf and jug!! I live in colorado, so i don't know the case where you live but here its around like 95 somthin. You could run less, but it will sputtttttttter when you step on it, and will foul your plugs faster.
Does anybody else live in Colorado??????????????????????????????????huh????