bwuest

Just completed a 8500 mile trip. We left San Angelo, TX and traveled through the Carolina's and Virginia. Up to northern Michigan, across to Yellowstone then finally all the way up to Fairbanks, AK. As this was a PCS move for the Army, I weighed the truck empty and then again after loading. I was carrying 1840 lbs between the bed and a hitch platform. The worst milage I got was 15.53 running 75 with the air on and heading dead into a 20 mph wind in North Dakota. The best I got on US interstates was 19.03 from Virginia beach through Pennsylvania and into Ohio. While on the Alaska highway where the speed limit is 62.2 (100 kph) the worst I got was 17.12 and the best was 21.05. All figures were hand calculated. This is in a Cummins 600 with a Feb. 10 build date and no reflashes. Total average fuel for trip was 17.728. The only fuel efficiency mods I've made are an Air Aid and the MIT intake tube. I also have a cap on the bed.

JRW

Which rear end to you have? The 4.10 or the 3.73?

dwhite

Very good mileage for a 4x4 w/600...Congratulations.

bwuest

I have the 3.73 rearend.

SuperGewl

Not bad, but it should get better for a practically empty truck.
1900lbs isn't exactly a load for these trucks

WyRam

Auto or 6sp?

bwuest

Auto

spudman

very happy to see another person besides me to get good milage from a 600

WyRam

Thanks,looking to order a 05,these Auto 3.73 mileage reports have me leaning that way.

bulabula

Did the DITY folks choke when you submitted a claim for an 8500 mile move?

bwuest

Actually the DITY was only from San Angelo directly to Fort Wainwright a distance of 4260 miles. The other 4300 were Leave and at my expense.

SuperGewl

Sounds like it was a fun drive, besides the DITY people actually paid for the whole trip if you did the weight and fuel correctly

45auto

bwuest
I am curious as to what your fill up technique is to calculate fuel mileage. For THE MOST accurate, I fill till I see fuel in the filler neck, then run it down and refill to the neck again. You will be suprised how much your overhead read out is off, if you have one and how far off it will be filling up in this way. You will probably see a number change even the way you are hand calculating now. Give it a try.

45auto

BTW
When filling to the neck, I usually see about 150 miles or more on the Odometer before it moves off the full mark

bwuest

I always fill until it clicks off and then put in enough to round up to the next whole gallon.