4.10 Gearing Daily mpg not towing?

[mtbgordon]

My PW with 35s is getting, at best, 9.5 (1400 miles on it). NOT towing. At the moment I am getting like 8mpg.

The Borla exhaust, and S&B intake are most likely to blame!

 

[PCT]

I get 17-18 hwy hand calc unloaded


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[@JC]

I get 17-18 hwy hand calc unloaded


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We don't care about your Cummins mileage...

 

[louisiana_dog]

Stock tires 20" wheels 14-14.5mpg avg with 20,000 miles 4.10 gearing

I've been back and forth between 87 and 89 octanes, going weeks between each. The cents per mile averages out to being equal for me. So if you want a bit more range, start using 89.

 

[Oosik]

I have a 2019 2500 Power Wagon. 24K miles with 6.4L Hemi. Overall mileage - 16.2.

 

[PCT]

We don't care about your Cummins mileage...

It’s not! Lol


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[Jsboening]

We don't care about your Cummins mileage...

There has always got at least one Ctd owner to show up and point out how superior the diesel is in every way to the Hemi. Lol kidding not kidding.

 

[mwalsh9152]

I dont hand calc because I dont pay for my fuel, so I really dont care. However, on my initial drive home from purchasing my truck from MD, I did hand calc, and found that it was very close to the trucks display average. I get 16.5-17 on the highway at 70-80 constant. It drops to 13-15 in my normal stop and go highway driving.

 

[Jak6four]

2021 3500 hemi 4:10’s crew cab 4x4. Had the truck just over a year with about 7000 miles on it now. Empty averaging 15 highway/ 12 city but have gotten as high as 16.5 on two lane highways where I’m limited to 65 mph or less. With my 3000lb camper in the bed I get 11-12 highway, same pulling my 5000lb boat. With both the camper and boat I get about 9-10. All numbers hand-calculated.

 

[jadmt]

Just got back from a 380 mile round trip road run driving 65-70 mph computer showed 15.7 mpg,hand calculated 15.3mpg. 2020 Power wagon, toyo 35’s, no air dam up front and rsi topper.

 

[raven_dt]

I lock 8th out when towing (6.4/3.73), essentially giving almost a 4.10 in 8th gear rpm. If I was towing heavier than 10k I would want 4.10s for the off the line twist...and a 38 gal fuel tank.

 

[mkmsr]

3500 CCSB 6.4 with 4:10.
Getting 13.5 to 14.5 mpg around town. 17 mpg when on interstate for long periods of time/distance. Towing I'm getting 8.5 mpg that's with a 6000 lbs trailer and other stuff making a combined weight of 15000 lbs. That's all from the lying computer, I don't hand calculate because I just don't care that much.

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[PCT]

There has always got at least one Ctd owner to show up and point out how superior the diesel is in every way to the Hemi. Lol kidding not kidding.

I sometime wish i had a CTD, but i specifically bought a 6.4L! Maybe i have a unicorn, but ill average on road trips between 15-18 MPG depending on location and terrain.

 

[Chris85xlt]

Im barely getting 12mpg from mix use and i drive like granny. best highway was 14mpg. Hand calculated
Truck is stock and I just hit 10,000 miles on the odo. I use 89 oct fuel

 

[BaseBD]

@Jak6four What speeds are you running with the TC and Boat combo? I am going to be doing that this summer with a car trailer and TC. would be very happy if I could see 10.

 

[davidh1329]

2020 2500 6.4/4.10 CCSB

I live near Charleston, SC so most of my driving is "flat land".
Around town, usually 12-14
Interstate, about 18
Once, 60 mph back highway trip with no stops, 19.2 I was leaning forward trying for a little more
Towing 14k 5th wheel, 8.5-9 (1/4 tank per hour..... 3 hours, stop for gas)
Towing, 68 mph is really the sweet spot.

That is all off the dash.

 

[dieselscout80]

Interesting I’m in SC too and my truck is 2020 CCSB w/ 6.4 & 4.10 also. I am seeing similar MPG results.

My 27 mile commute showed 15.9 this morning.

A week ago I towed my 18’ flat bed 180 miles to haul a 10’ bushhog and made 14.4.

 

[G’Dave]

I just picked up my new truck from Mark Dodge yesterday. It’s a Laramie CCLB, Hemi (of course), 4WD, 4.10 ratio, 50 gallon tank, off road package, and snow chief.

I drove a little over 700 miles yesterday. The lie-o-meter recorded an average of 17.2 for the trip. Actual measurement was 16.9.

Took it very easy for the first 300 miles, trying to vary my speed as much as possible, keeping it under 55mph. Then I opened it up some more for the remainder of the trip, but never exceeded 75. I avoided interstate for the majority of the journey.

The roads from Lake Charles to St Louis are mostly fairly flat, with some very minor hills. There were no headwinds or crosswinds that I noticed. Air temps ranges from 87 at the beginning down to 72 at the end of the trip.


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[mwalsh9152]

For the first time ever I purposefully drove slow this past Friday to see what I could get my MPG to. I tried to keep it to 5MPH over the limit max, so 60-70MPH and I saw as high as 18.1 on the display.

 

[Jsboening]

For the first time ever I purposefully drove slow this past Friday to see what I could get my MPG to. I tried to keep it to 5MPH over the limit max, so 60-70MPH and I saw as high as 18.1 on the display.

So motorhomes were leaving you in the dust.