my overhead is dead on with hand calc as well...always within .1 accuracy

 

That sounds a little high for your truck being a 2500 QC but I guess it's possible if you accelerate/cruise very slowly....your gears and whether it's a 4x4 play a role too. What speed do you cruise at on the highway? I get good mileage IMO but my truck is a lot smaller than yours...I get around 16 city/23ish hwy (speed limit) under my best driving and ideal conditions. Under "normal" driving I get high 14's city 21ish highway going 75mph.

 

i baby mine and at 9000 miles i'm getting about 11 if it is a true 100% in town and the best i have got on the highway was 17 with the cruise set at 65. i don't think it can be driven any easier than i drive it. normal everyday driving is about 13.

 

i was getting about the same on my 04 2500 when i first got it. now a couple thousand miles later i get between 12-13.5 all the time. it all started with the new tires and level.

larger tires and 3.73's are really bumming me out

 

yeah your telling me its 4.56 time. damn school ate all my money though. fack.

 

I get about 16.5 combined mpg.

 

Are you a newbie to the world of pickup trucks? What's so bad about 14 MPG town/20 MPG highway with a 5,500 pound pickup truck equipped with a powerful V-8? If you want good fuel economy get a VW Jetta or a Mini.

 

i got 20 cruisen at 75 hwy with load on a trip and i do get on it i cant under stand y people dont do better with ther 1500

 

and its a 4x4 also and when i pull a 6000lb boat i get about 10-12

 

Because I'm not a midget ^, I weigh over 200 pounds and I didn't buy a Hemi to P---yfoot around like a 90yo on Valium.