Elson,,, I've always wondered why you tested the "Pennzoil air cooled" so thick at 20:1 instead of 32:1 or thinner, the guys I know that use this oil are using it mixed at 50:1 for their BME 105 (as they were instructed by BME), after all it is a scientific oil isn't it ??

anyway I have been using H1R in my MVVS 35, but because of the extra fuel consumption, I doubt I get 15 minuets of flight time on my MVVS with 20oz, " 15 minutes seams low to me" and the higher running temp I have been thinking about switching to the Pennzoil (MVVS instructs to use no less oil that 40:1),,,

just wondering what your comment on all this will be.
thanks !!
Jim