There is ZERO benefit to do this---ZERO! I have done MANY comparisons for friends and their cost/mile goes UP even though E85 is cheaper per gallon. This happens because of the FACT that there is LESS energy in the gallon of E85 thus yielding a lower mpg and a HIGHER cost/mile. Couple this with HIGHER cost of food because of the higher cost of corn and you have a Double whammy!!! Lower performance---a Higher cost per mile and Higher food cost---NO WIN all the way around!!!