Ethanol free is the same price as diesel in my area, currently 3.99/gal.
Ethanol gas is 3.39.
Not only the difference in mileage, cold engine operation is vastly better. And I have had 4 fuel pumps in various cars destroyed by ethanol. The savings is more than just mileage.
Thanks, so basically the same price for fuel to drive 100 miles $13 +/- 1%.