Bill, Interesting to hear your 150 didn't do well on Mogas, (or did you just mean that the gas "stinks"). We used a lot of it in the 150 that we had. Couldn't tell any difference in performance. Used only Amoco gold (93 octane). Some claim that the vapor pressure is lower with mogas and will boil/flash/vapor lock at high altitudes when using a pump.
My brother owns a vari-ez and the right tank developed a leak that desolved about 6" of the foam in the wing. He swears that using mogas only on 2 occasions caused the failure. However it's anyone's guess as to what kind of epoxy was used as he didn't build it. My KR (project) has a lycoming O-235L2C, so compression ratios are too high for the car gas. One less worry I suppose. Just my 2 cents worth Best Regards Riley Collins Rutledge, TN
