Here in Tulsa you will find Ethanol free gas at:

J Food Mart
Main & Elm
Jenks, OK

It is located a couple of miles from Riverside Airport.

Would be nice if other people would post were to find Ethanol free gas
locations.

You will do better mileage in your car and can use it in your plane if
it is modified for Mogas. Don't put Ethanol gas in your plane as it is
highly corrosive and with eat your fuel tank / fuel lines and
carburetor.