I have a nylon fuel tank on a 2003 bike and it has swollen from ethanol such that it is tricky to remount after removal because it expands when unconstrained by the frame. Ducati had a recall over this but Triumph got away without having to do one. I have been running ethanol-free for a few years now because a station is near me but that doesn't fix the problem.
My local Meijer gas station recently remodeled and now carries Rec gas, which contains no Ethanol or any other additives. It's actually more expensive than any of the other fuels there, but it is designed for things like motorbikes and lawn equipment.
