I’ve tried 93 ethanol free in my 16 Tacoma and I didn’t see much of a difference in mileage.
With my commute, there is no time for regular fuel to deteriorate.
Old stuff like the 750, K5, and both CJs when they are operational get the ethanol free.
The EPA does not allow ethanol free in Colorado. My ATV requires a carburetor rebuild every year because of the EPA. The neoprene looks like Swiss cheese.