E85 was $1.99 today. 87 octane gas was $2.29 and premium was $2.59.
I was at 107290 miles, last tank was at 107002 miles, for 303 miles on this tank. I filled up with 17.807 gallons, for 16.17 miles per gallon.
I saved $8.09 by using E85 vs. premium, not considering the mileage penalty.