2004 with 109,000 on original spark plugs, lol. 6" lift, 35" mud tires, Im custom tuned, exhaust, intake.
Haha so the 35s and original spark plugs? Did you regear at all? some of the guys are still able to pull mid-teens on the highways with 35s and 4.30s or 4.56s
Im still running 3.73's. But I got a new job with mucho $$$ so very soon I plan on regear, plugs, ball joints. lol.
I get 10mpg in my truck city. 3.73LS, 33.5" offroad tires, 4WD, 07 Screw 5.4L 4-spd auto, stock tune. Oddly (or unoddly) enough, my wife gets 13 city. I really should let her drive more often, maybe I'll have enough money by Xmas for presents and stuff!
I average 15.5-16.5 in my mostly city with some "semi-HWY" driving (60-65mph) Best I've seen driving around town was 16.9, that was me babying it the whole tank. I haven't been able to do that since the custom tune though
Avg 16mpg 98% city here mods in sig with stock 3.55s Will be getting E-fans and 4.10s here soon so we will see how that helps
My Dads 05 HD get horrible gas mileage like 250mi per tank all stock at 120K but is need of a plug change I just don't wanna tackle that right now lol but it fully loaded with full lenght toolboxes sides and center and a ladder rack