Sorry I know this is an old thread but i was wondering what you are getting for MPGs now? sounds like i have the same exact truck and your driving habits are about the same and im getting 10.2 MPGs. ive noticed the thing sucks gas when idling after remote start.
So I still drive it peppy - I haven't looked in a while to be quite honest, I'm going to guess I'm getting 13.8 mpg right now. That's my "city driving, stop and go, ton of stop lights, hills, morons driving 26 in a 40" etc. mpg.
I can say that I had a long highway trip recently, 600ish+ miles, including some around town there.
I went 525miles on 1 tank (33 gallon tank), I had "12 miles" remaining, I suspect I had more.
I drove "Sporty" on the 1st trip, I used cruise control on the way home.
I got 18.8mpg and climbing by trip's end. I suspect It would have been 19+ had I done the cruise control on the way there.
If I remember right I get about 15.7mpg with some mixed driving when the seasons are better, again a rebel with no air suspension, in a region where my fellow motorists don't believe in turn signals!
Note: I run 89 octane or better!
One of the things that calmed me down when my MPG wasn't "Awesome"?
Get a tank of 93, do a highway run, put it in cruise control at like 67, speedlimits and road conditions permitting of course!
Watch your mpg climb.