NYBOR

Hmm. just looked up the difference and read this????? Both Canada and the US use the same system for Octane ratings (RON+MON)/2.

No it was 89 octane - and some 93. mostly 89. is that too low????? it seems that it HAS to be fuel related, since that was the only thing i changed on the flight back when everything was in the green. thanks d

oops, regarding the previous post, I meant to say non-ethanol mogas.

Hello. I have a Searey amphib with the 912s engine. Oil temp was fine for a year, but last trip it ran very hot (260 F) and I had to nurse it to the airport. But, when topped off with Avgas, it ran cool the entire trip back home???? I had been putting no-lead mogas in it before this trip. The only thing i have done differently was use Yamaha Racing Oil, instead of the Aero Shell for Rotax engines. I have just changed the oil filter and went back to the Aero Shell - haven't flown it yet. Does ANYONE have any idea what is going on? thanks in advance dave