Having had about 4 tanks blister.....apart from accelerated rusting......ruined vac tap diaphragms.....split float O rings.....snapped rubber fuel lines......leaking floats......leaking rubber tipped float needles......the Ethanol destruction list is endless. Plus the price of Corn Flakes has gone up, as they are effectively growing food to make ethanol to charge us more to wreck our bikes and classic cars. Very Eco.
Caswell tank liner is only one found that works. Have to rub down tank to let it breathe. Very strong detergent/water wash out of stripped tank. Very thorough. Rattle sharp items about inside to scuff it up. Let it dry thoroughly.......if warped (as on Daytona 955i) let it sit a long long time for it to return to shape. Then Caswell....i dont skimp so use the big kit to make sure get 100% cover over the inside.....see many youtube videos. Make sure sort the tap holes and pump openings etc, the stuff is very hard when set.
Then get tank re-paint by good man who knows what primers etc to use.
Never put ethanol in bike!!! At the moment Esso Supreme Super Unleaded is ONLY fuel with no ethanol (except in Teeside, Devon, and Cornwall. That may even change next year.....even after Brexit.....the greens are talking 15% now!
If that happens will have to go back to stripping it out again. See youtube again. Distilled water (with some food colouring to help) big shake, let stand, drain off, through Mr Funnel into tank = no ethanol. Still use premium fuel as most will still hopefully be at 5% level anyway.
Use Sta Bil in tank so fuel lasts for 2 years, instead of 3 months, plus (if do have ethanol) at least it stops oxidation.....but plastic and rubber will still get duff.
Triumph, Buell, Ducati. All suffer worst. Fibre-glass cafe racers. If have very low mileage classic may have to think Aspen fuel, or Avgas etc. £16 a gallon....also no benzine to give you cancer.......ask the chain saw and strimmer lads where they get theirs from. Any sensible tree surgeon or gardener puts it in their gear, as they inhale the fumes/exhaust all day.
See what Jay Leno thinks of Ethanol......he only uses canned fuel now. Has had literally hundreds of his classic collection in bits due to it !
In Canada they used to have an Ethanator kit as on youtube
that makes ethanol strip a doddle, and in quantity. Never found it for sale. Tried the phone number on kit, but no reply. Someone out there will wipe up if makes a nice bit of kit like that. One aviation guy in Canada made a huge thing like a butter churn. Massive glass vessel on a spinner, with drain on bottom. Saved buying Avgas.
Can be distilled out, but that needs proper safety/industrial approach.......i would buy it! Friends in France and Holland can readily buy non-ethanol fuel at certain stations, just a tad more expensive. We cannot......except for Esso.....for now.