B&S and other small engine manufacturers warn users of equipment with their engines not to use ethanol blends in their engines.
I run ethanol in anything from a 41 chevy that I’ve owned for a decade, BS gas pumps, generators all the way up to welder generators..........without problems
Since ethanol is 100 octane, was crap low grade refined gas can they blend to end up at 87 octane. Its the low grade gas that is the problem.
the low grade gas, lets the refiners extract a extra gal of higher value diesel fuel from each barrel....they love it.