3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
05' 2500 with the hemi, QC, SB, see signature for mods, 1/2 highway 1/2 city, with 87 tune I would get 260-280 per tank (35 gallon tank with an average fillup of 28- 30 gallons), with 91 tune (usually 93 octane) I get 330- 350.
on recent trip to houston about 550 miles from where i live i went 400 miles on about 3/4 of a tank of gas before stopping for more fuel. 26 gallon tank computer says i was getting about 20 mpg. on the way home which was uphill i only got about 18.5. highway mileage of course.
Okay so the best I can determine is if you are getting 400 miles from a tank of gas you are doing pretty good. Also it seems that whether you have the V6, 4.7L, or Hemi they all get about the same mpg.
Well I just got my truck a week ago and when I left the dealership they filled it up and I already had to fill it up yesterday. I only live about 10 miles from work but after work I mow lawns also so I am always pulling my 6x12 enclosed trailer and I think I am only getting like 9 to 10 mpg the overhead said 210 after I filled up this weekend but I have been keeping my foot in havent got used to the exhaust sound yet. LOL