the ethanol will clean the crud build up in the fuel lines and that was why it chugged a bit on the first 2 cars; ultimately ethanol will get the sludge out of your tank if used long enough BUT will also clog your fuel filter and eat your gaskets for the older cars and clog your fuel pump for a needed replacement, I know, I have several older vehicles and will not use it, as they have/had it blended in fuels of today's gas pump stations, it will, maybe by design, take out the older classic cars, which is why I use premium.

I have also looked into using gasifers for vehicles and generators, as I am surrounded by forest woods.