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4x4ord

Alberta

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Posted: 03/01/21 11:50am Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

4x4ord wrote:

Cummins12V98 wrote:

4x4ord wrote:

I completed my first trip towing a tandem dually gooseneck with my 2021 F350. 1100 km round trip. Got about 12 mpg one way with the deck empty and 6.9 mpg loaded coming back. (US gallons)


Hope you had a headwind and running 70 to get 6.9.


There was a stretch where I had a bit of a wind coming at me at about a 45 degree angle .... I was getting just over 5 mpg then. Thankfully most of the trip didn't have much wind. Probably averaged about 65 mph.


Yea wind does matter! I was Westbound on Hwy 40 trying to get the HE!! outa OK as it was COLD with a 40mph head wind. One point my fuel economy was 5mpg.

[image]


What is your typical mileage at say 65 mph on a calm day?
Is your Ram mileage meter accurate?
Can you change a calibration constant within the DIC to increase the accuracy of the Ram meter?


2017 F350 SRW Platinum short box 4x4.
B&W Companion
2008 Citation Platinum XL 34.5

Cummins12V98

on the road

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Posted: 03/01/21 01:10pm Link  |  Quote  |  Print  |  Notify Moderator

"What is your typical mileage at say 65 mph on a calm day?
Is your Ram mileage meter accurate?
Can you change a calibration constant within the DIC to increase the accuracy of the Ram meter?"

That was my 2011 RAM HO pulling a Mobile Suites at 29k combined with 3.42 gears.

I normally towed at 62 with that ruck and would "AVERAGE" West Coast 9.5mpg.

It was fairly accurate at lower mileage and be off plus by .4 mpg at 9.5.

No adjustments possible.


2015 RAM LongHorn 3500 Dually CrewCab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's
37,800# GCVWR "Towing Beast"

"HeavyWeight" B&W RVK3600

2016 MobileSuites 39TKSB3 highly "Elited" In the stable

2007.5 Mobile Suites 36 SB3 29,000# Combined SOLD

justme

USA

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Posted: 03/05/21 10:28am Link  |  Quote  |  Print  |  Notify Moderator

When people post the fuel miles, they should include speed, wind, weight, elevation, type of roads, fuel type and etc. to get a better idea of their experience. Remember, friction increase by the square of the speed which makes speed and winds more important as well as weight.

4x4ord

Alberta

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Joined: 12/23/2010

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Posted: 03/14/21 09:22am Link  |  Quote  |  Print  |  Notify Moderator

I did a 300 mile highway, round trip yesterday with maybe 5% city driving mixed in. The truck did a regen during the trip and I drove about 70 mph when on the highway. Very little wind and flat ground. I averaged 19.2 mpg (US).

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