Hey, I wondering which one of the two oils I should run. The ratio I use is 32:1. I'm deciding between Klotz R50 or Maxima K2 and I also heard Motul 600 is pretty good. I'm leaning towards the synthetics more because last time I ran Maxima Castor 927 and my pipe was full of carbon and the jetting was spot on. Its just a hassel to clean the pipe every 8hrs or so. My other question is will any of these oils seperate with race gas. I've heard Klotz can but the last time I've used it I never had a problem. I use Turbo Blue 110. I do plan on running 32:1 in my 250 and 125 and I ride a big sand mx track so its WFO. Thanks