I have one of these fiberglass tanks from treats (https://www.treatland.tv/fiberglass-race-gas-tank-2-p/fiberglass-gas-tank-2.htm). The description says, "for display purposes or museum bikes only. if you intend on putting gas in them, you are using it at your own risk and you are on your on in that regard".
Am I going to destroy this tank if I were to use gas that has ethanol in it? My intent is to use Pure ethanol-free gasoline from a local airport but I am curious if these can even handle some ethanol. If you have any experience with these tanks please share.
Obviously most of the bikes that use fiberglass tanks are race bikes, so they are probably running pure gas and being flushed and cleaned after every use. So, I would assume these cannot handle the use case that the tanks on normal street bikes see. Thanks in advance.
Edit: can I seal the tank (with some like Caswell) to help it withstand some semi-normal use?(edited)