I decided to fill-up on ethanol free gas for the first time and I just filled up again with E0. I set a new personal best of 53.76 MPG. My previous personal record was 51.6 MPG and that was in the summer with regular Chevron E10 and a max speed of 50 MPH. I'm going to keep filling up for a couple tanks to verify the results of switching to E0 but so far it looks like I've gained 10 MPG by using E0.
I'd like to thank
http://pure-gas.org for helping me find 2 E0 gas stations in my area.
Adam