Mike Stirewalt wrote: > ethanol. And who knows what it might be doing to diaphragms & other > fittings inside the Ellison?
I know a guy who's had an Ellison diaphragm in a jar of E85 (85% ethanol) for several years and it still looks like a new one. But as Larry would say, "your mileage may vary"! I also took my Ellison apart after a thousand gallons of autofuel had been run through it and it also still looked new. I put it back in to continue the experiement. I've now run about 3000 gallons of autofuel through it, and best I can tell, it's still fine. Having said that, I run auto fuel almost exclusively, but am lucky that the nearest gas station to my house and hangar can't sell ethanol-laced fuel because it's incompatible with their tanks, which tells you something. I've only knowingly put ethanol in it once, and that's when I was stuck out in the boonies of Iowa with no aviation fuel available, and all auto fuel there is apparently required to have ethanol in it. I ran it through the exhaust system before the day was over though. I've never notcied a power difference with 100LL, but it sounds like a test is in order! I HAVE noticed that I can lean the engine a little further before the engine gets rougher though... Mark Langford n5...@hiwaay.net website www.n56ml.com
