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Accidently used Ethanol

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di1630

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My formerly ethanol-free gas station recently posted "up to 10%" on its pump. I am not sure if I got some of that when I fueled up last because I honestly didn't even look. Plan ran fine, I have 100LL in it now. Anyone think that running 80 gallons might have hurt anything in a O-540 on a 235 or is there anything I should check for?

I've read the horror stories of ethanol attacking rubber and composites but is that just CYA type writing or has anyone seen issues? My old vehicle handles the stuff just fine.
 

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