Bone Stock & Fuel Mileage

[Considering a Cummins]

Thanks for the info. Was that hand calculated or computer?

[Considering a Cummins]

Sounds like a hell of a nice trip. Just out of curiousity, how do you like your D-max compared to the Cummins?? Was your Cummins a 12 or 24 valve??

[Airwolflives]

08 stock lmm 17-18 daily driving to work mixture of town and highway.I will tell you my buddys 06 cummins gets the same but when we pull our travel trailers i get 14 pulling my 6500lbs trailer he gets 10 pulling the same size trailer.Both mpgs are hand calulated.

[Bama1]

Considering a Cummins: Hand calaulated. 5181.6 miles divided by 441.94 gallons = 11.724668 miles per gallon. I have compared to computer and the computer is very close. At ever fill up the computer gallons used is very close to what I can put in tank.
My 1999 Cummins was a 24 valve. The 24 valve came out 1998 1/2. Mine was rated 235 horse power because I had 5 speed manual. The auto was 215 horse power.
I wont knock the Cummins. It served me well for 10 years. I had one lift pump go bad and I lost 5th gear. I did like the 34 gallon fuel tank as compared to my 26 gallon I have now. Both were short beds.
I'll be 70 years old tomorrow and it was time to quit shifting gears. Love the Allison.
Paul

[jaglmm]

if your "considering a cummins" i would consider a 5.9 cause the 6.7 SUCK

dodge took out the only thing good about there truck.. the 5.9

[09DRWDuramax]

5400 mi on mine 11mpg. I have about a 1000 miles of towing in there. My best mpg so far has been driving about 60-62mph unloaded, i got 15mpg. The worst milage was a week after I bought it, I pulled a 41ft Cyclone 250mi to the Sturgis rally and it only averaged 7.1mpg hand calculated.

[Big White Dmax]

I drive mine like I stole it and get 14 miles per US gal on mixed driving and 18 highway. I have hand calculated and computer is real close. As far as comparing against a Cummins, I talk to drivers every week pulling trailers into the RV dealer I work at.
Most are Dodge but also Duramax and Powerstokes.
In the DPF engines, the Cummins and LMM get very close pulling the same sized units. Ford gets less.

[kneeconst]

I get 15 to 17 in town and 16-19 open road at 70-75. I had a 6.7 cummins and loved it but they are nowhere near figuring out the bluetec on it which is the reason i changed constantly in the shop. After exhaust delete i had no issues but couldn't afford to risk losing warranty.

[michaelmoten]

I am getting about 15.4 hand calced. Mixture of highway and country driving. Would like to do a little better but can't bring myself to void the warranty.

[ctimmons]

Here you go. Since I first bought:

Date Mileage Trip DIC DIC Real Calc
MPG Gallons Gallons MPG Total MPG Comments
05/27/09 5 5.0 0.00 0.00 0.0000 0.00
05/29/09 142 142.5 15.70 9.00 8.1120 17.57 17.50
06/03/09 468 325.5 16.90 19.10 20.2990 16.04 16.47
06/05/09 691 222.9 10.80 20.60 20.7376 10.75 14.06 Tow Trailer
06/07/09 882 191.1 10.00 19.00 18.8610 10.13 12.97
06/13/09 1177 295.5 16.20 18.20 19.2070 15.39 13.50
06/18/09 1391 213.5 17.60 12.10 12.5070 17.07 13.95
06/27/09 1755 363.9 17.00 21.30 22.4890 16.18 14.36
07/04/09 2004 249.1 18.00 13.80 14.4270 17.27 14.67
07/10/09 2210 206.0 17.50 11.70 12.3000 16.75 14.84
07/18/09 2437 226.8 17.50 12.90 13.3380 17.00 15.02
07/25/09 2673 236.0 17.10 13.70 14.6270 16.13 15.11
07/31/09 2950 276.8 19.00 14.60 15.7890 17.53 15.31
08/08/09 3324 374.4 17.50 21.30 22.1040 16.94 15.48 Tow Trailer
08/12/09 3532 208.3 17.70 11.70 12.4650 16.71 15.54 Tow Trailer
08/12/09 3751 218.7 9.50 23.10 22.4200 9.75 15.02 Tow Trailer
08/15/09 3931 179.8 12.90 13.90 14.6730 12.25 14.87 Tow Trailer
08/16/09 4157 226.1 10.00 22.60 22.4320 10.08 14.50
08/19/09 4222 64.2 15.70 4.00 4.2670 15.05 14.51
08/25/09 4578 356.5 18.10 19.60 20.8070 17.13 14.68
09/02/09 4857 278.5 17.10 16.20 17.0130 16.37 14.77
09/11/09 5215 358.2 18.40 19.40 20.4970 17.48 14.93
09/15/09 5549 334.2 17.90 18.60 19.8590 16.83 15.03
09/18/09 5914 365.0 17.60 20.70 21.8870 16.68 15.12
09/28/09 6286 371.5 17.80 20.80 21.7350 17.09 15.23
10/01/09 6421 135.2 15.90 8.40 9.0340 14.97 15.22
10/01/09 6677 256.2 16.90 15.10 16.2870 15.73 15.24
10/02/09 7017 339.9 19.00 17.90 19.2200 17.68 15.34
10/02/09 7386 369.1 19.40 19.00 20.5940 17.92 15.45
10/07/09 7746 359.7 17.90 20.00 21.1750 16.99 15.52
10/08/09 7584 108.0 17.10 6.30 6.6000 16.36 15.00
10/09/09 8175 321.1 17.50 18.30 18.7870 17.09 15.58
10/10/09 8537 361.9 18.30 19.70 20.3856 17.75 15.67
10/12/09 8891 353.8 17.60 20.10 21.4250 16.51 15.70
10/16/09 9193 301.3 17.60 17.10 17.9670 16.77 15.73
10/25/09 9543 350.4 16.70 20.90 21.8590 16.03 15.74

Anal ain't I....