Have you any WAWA Convenient Stores in your area ? They have real gas (no ethanol) and it is 89 octane !!!
I use it all the time here in Central Florida. Car gets better gas mileage by 3 miles per gallon, which is about 20% better mileage and it performs better on real fuel....more BTU'S.
It cost more but if you calculate the fact that you're getting 20% better gas mileage, then it means you are paying almost the same a regular 87 octane ethanol gas.
Tim
Central

Florida