I'm not sure how marketable this would be, due to the large amount of
potential replacement componets. Starting with tank sealant and
continuing on to most of the flexible components through to the carb.

Don't get me wrong, I think it would be great to have. I just think
the cost of revamping a fuel system might scare most folks away.

I believe someone here (Jim Weir?) said the total cost of parts to replace
all the rubber in contact with fuel is less than $100.

Perhaps the fuel tanks would have to be sloshed with something ethanol
resistant? Would that even be an issue to planes that don't use rubber tank
liners?

My plane has an autofuel STC that I can't use anymore because of
alcohol and I don't know if I'd go the expense.

That sucks. I would fly a LOT less if I had to buy avgas.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"