It is said that ethanol causes auto engines to wear prematurely. Don’t know how true that is but I have seen it written several times.
Down here in Brazil, almost everyone runs 100% ethanol and haven’t anyone complaining. Seems peppy, they all drive like F1.
The nanny-ninny liberal pansies know best for us.
I'll tell you what is true. Ethanol attracts and holds water. This can cause steel fuel lines and gas tanks to rust. Ethanol is a solvent and will go to work on built up varnish in gas tanks and fuel lines, causing it to break down, release and wind up in the fuel filter and/or in the carby or injector jets. Ethanol is also hard on certain seals in carburettors, dissolving them over time, particularly marine and aviation related engines. Some light aircraft use auto fuel. Auto fuel with ethanol is a no-no in aircraft because of the water attraction. If ethanol in fuel is holding water and the airplane flys at an altitude that is below freezing, hello frozen fuel lines, engine failure and a forced landing.
These are all in addition to lower gas mileage, higher food costs, etc. Ethanol is bad Ju-Ju no matter how you look at it. That's why CONgress mandated it's use.....
Well, be sure to repeat it several times more before you try to find out.