E85 gas is junk. unless your engine is specially designed to handle it, DO NOT put it in your tank as it will wear faster, and cause major engine problems down the line.

I used to run it in my 2008 silverado. I keep a record of every tank of gas I run, what mileage I get, how much I paid etc etc. I have a logbook in each vehicle I won to keep track of maintenance and gas usage etc.

Unless the price of E85 was less than a cost ratio of 77% compared to regular gas, it wasn't worth it just based off the MPG aspect.

With E85, you burn more, have a shorter range, put more wear on your engine due to having to run more gas or higher RPMs to get the same distance or power and it is a poor substitute.

Loss of power is also very noticeable in the mountains. My 2010 will never see a drop of that shit unless it is less than 50% of regular gas, and there really is no reason it should be as high priced as it is.