I'm sure the owners of all the 200,000 mile beaters on Craigslist are scrupulous to use only E0 fuels.
“are scrupulous to use only E0 fuels. “
Depends on where one lives.
I have to blend 85 with 91 to get 87 Octane E0 to minimize spending where I live.
There are plenty of places iny the good ol’ USA where E0 is basically unavailable.
Oddly enough there seems to be good E0 availability in the heartland of corn, Iowa. [Casey’s is your friend]