Ya'll got some crappy MPG!!!
5.0 with 308,377 miles on orig. motor and drivetrain.
31x10.5x15 on stock suspension
On our camp trip to Alamosa, CO we were getting 21.9 mpg - Half was doing 75mph the other was up and down the rocky mountains between 45-65mph on a 370 mile trip (each way).
On average I get about 16mpg city and 20mpg highway..depending if I'm on the flat lands of I-25 or mountain hills on I-70
Just done minor maint. in the last year..spark plugs, oil changes (3 total), air filter, oil catch can installed/drained, cap, and sea foam (3/4 intake and 1/4 in gas tank)
I run premium gas (91 oct).
On my gas gauge, I'm just under 7/8th of a tank full, and have traveled 76 miles so far sense last fill up. Gas guage is fairly constant per miles/gallons used unlike my new truck that has a hard time trying to figure out exactlyu how much fuel I actually have..