Methanol is corrosive to aluminum. Hard anodizing is used to protect aluminum parts from methanol. I know nothing about E85.
Regards, Neil Tucson, AZ
When I was a kid I put a dent in my dirt bikes tank so I borrowed my uncle's spray gun, had the paint shop mix up the Suzuki yellow
and bought new factory decals.
I spent about a week polishing out the orange peel. When done the tank looked like new.
We go to the races and I gassed up with Methanol but I spilled some on the paint.
New paint job.