• PiperForum.com is a vibrant community of Piper owners and pilots. Our over 1,500+ active members use Piper Forum to swap technical knowledge, plan meetups and sell planes/parts. We host technical knowledge of general aviation topics and specific topics on J3-Cubs, Cherokees, Comanches, Pacers and more. In addition to an instant community of pilots for you, PiperForum.com is a library of technical topics, airplane builds, images, technical manuals, technical documents and more.

    Access to PiperForum.com is subscription based. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched library of Piper knowledge.

    Click Here to Become a Subscribing Member and Access PiperForum.com in Full!

Accidently used Ethanol


Apr 15, 2010
Reaction score
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.

Latest posts