Opti-2@50:1
I'm part of a maintenance team for non-automotive equipment in a municipality of over 1 million people. We have hundreds of 2 stroke implements that are used in terrible conditions. Rescue saws, urban forestry equipment, etc. The stuff used for emergency utility repairs are absolutely brutalized, premix ratios are often
close enough, these are machines that are often full throttle the moment they start. -35C to +35C, rain, snow, mud, occasional partially submerged use (not kidding). Other machines are WOT through multiple tanks of fuel all day, week after week. Although the machines are spec'd for 50:1 we use them at 70:1 successfully per Opti's claims. It's thousands of hours each year of hard use and I have yet to see a machine fail, or wear out early, because of oil related performance. This experience quantifies the oil as a good performer to me, and I suspect it's good enough to run in my dirt bike
