My truck is stock. I didn't spend that kind of $$$ to walk away from a factory warranty.
I certainly don't agree that 11 MPG over 23,000 miles is a "one in a million" truck. As you can see from the app, there are a few fill ups where the truck got less than 8 MPG. There was one fill up near 24 MPG (a 109 mile 55 MPH solo trip). All the fill ups average out to 11 MPG.
As I said, it is a dedicated tow vehicle. I have other cars I would rather drive when I am not needing to tow. Most of them are towing tandem. Some of them (guessing maybe 1/3) are towing just the ski boar or just the fishing boat.
I could take a photo of the app where the number of miles per tank divided by the number of gallons for the MPG, but at this point I am losing interest, and doubt that it would convince you anyway. And, I'm not sure why I care to convince you.
Jim, how much did you actually tow with your 2012?