Managed to get a brand new tank six months ago (in red as needed and I gather was the last of them)) ma original tank had blistered because of ethanol in the fuel - as we are all learning about and suffering
From what I understand If the fuel is not left to stand ie the bike continually used ethanol is not an issue, problem is when bike is left in storage for example over winter (I'm turning into a fair weather rider in ma old age).
I have access to AVGAS 100LL which is ethanol free (aviation fuel which is low lead but has 4x lead content of leaded fuel and 100 octane) so I have drained ma tank down and put gallon of AVGAS in, if I need to take bike out will iether just dilute whats in the tank with ethanol fuel or drain down tank and refill with ethanol fuel
All seems a bit drastic huh but what else can be done ?