Hey everbody, I've been a guest for about a year but just became a member yesterday. I've come here several times because of issues with my 2012 5.7 flexfuel Crew Max 4wd and I have found this site to be a great resource of information. I've read posts about gas milage and I know the 5.7 is not an economical engine but I'm only getting 8-9 miles city and I have never got better than 15 highway. I drive very conservative no quick take offs and speed limit on highways. No mods, yet, and stock 18" wheels. I've already had to have my computer reset twice because it was misreading the fuel as ethanol(E85). Dealer kept insisting that it was my fault, that I had put in E85 and I would have to pay them $90.00 an hour to drain my tank. Excuse me, but it is a flexfuel engine is it not and besides I do not use E85, period. Thanks to this site I was able discuss that particular problem with some knowledge of the situation. I'm at my wits end with this truck, my dream truck has turned into a nightmare. Any information or suggestions will be appreciated.