Hi Bob. My 110 engine has 90hs. I use auto gasoline here in Brazil with 25% ethanol. It has 95 octane. I used 100 LL only once just to test. Saw no noticable difference.
bob noffs > Jose P M AlmeidaJanuary 7, 2021 at 7:36am
thanks jose. isn't 25% a little high for this engine?
Hi Bob. Yes you are right. The manual says maximum of 15% but all auto gas here in Brazil has 25% or 27% ethanol. Since I am monitoring closely and I had no issues with 90 hours of flight and it is a very clean fuel, the only concern would be the hoses and the lo press filters but until now no problem. My Honda CRV 2.0 is imported from Mexico and runs on this same 27% ethanol gas as well as millions of imported cars designed for "normal" gasoline.
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Joe Kanuck is now a member of Viking Aircraft Engine Forum
"Thanks! I have another newbie question. Since the Viking engine is built to automotive tolerances regarding piston to cylinder clearance - is preheating required in cold weather?"
"Hi Bob. Yes you are right. The manual says maximum of 15% but all auto gas here in Brazil has 25% or 27% ethanol. Since I am monitoring closely and I had no issues with 90 hours of flight and it is a very clean fuel, the only concern would be the…"
"Hi Bob. My 110 engine has 90hs. I use auto gasoline here in Brazil with 25% ethanol. It has 95 octane. I used 100 LL only once just to test. Saw no noticable difference."
Bill Encke is now a member of Viking Aircraft Engine Forum
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