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way2roll

Wilmington NC

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Posted: 02/08/21 06:31am Link  |  Quote  |  Print  |  Notify Moderator

MFL wrote:

fj12ryder wrote:



14-16 mpg pulling a 5th wheel...hmm. Pretty amazing, nearly inconceivable. [emoticon]


It's those never ending downhills that make this possible. Even the 22 mpg not towing "pretty amazing"![emoticon]

Jerry


Well you should drive the new Ford with the 6.7 and 10 speed tranny and educate yourself. Either the Ford built in avg MPG calculator is off over the course of a 1,000 mile trip, or you don't know what you are talking about. The previous models with the 6 speed trans got about half the mpg as the new ones. But the new models get amazing mileage. One of the reasons I bought new over used.


2020 F350 STX 6.7L Turbo Diesel
2020 FR Cedar Creek Silverback 29rw

valhalla360

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Posted: 02/08/21 06:35am Link  |  Quote  |  Print  |  Notify Moderator

rexlion wrote:

I keep dreaming of an RV rig that will get 30 mpg.


Rented a camper van in Germany a few years back. Small diesel with a stick. I calculated it based on the final fill up and it was about 30mpg.


Tammy & Mike
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Lynnmor

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Posted: 02/08/21 07:04am Link  |  Quote  |  Print  |  Notify Moderator

way2roll wrote:



Well you should drive the new Ford with the 6.7 and 10 speed tranny and educate yourself. Either the Ford built in avg MPG calculator is off over the course of a 1,000 mile trip, or you don't know what you are talking about. The previous models with the 6 speed trans got about half the mpg as the new ones. But the new models get amazing mileage. One of the reasons I bought new over used.


I have the older 6.7 with a 6 speed transmission, can I just change out the transmission and get 40 MPG? [emoticon]





MFL

Midwest

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Posted: 02/08/21 07:21am Link  |  Quote  |  Print  |  Notify Moderator

way2roll wrote:

MFL wrote:

fj12ryder wrote:



14-16 mpg pulling a 5th wheel...hmm. Pretty amazing, nearly inconceivable. [emoticon]


It's those never ending downhills that make this possible. Even the 22 mpg not towing "pretty amazing"![emoticon]

Jerry


Well you should drive the new Ford with the 6.7 and 10 speed tranny and educate yourself. Either the Ford built in avg MPG calculator is off over the course of a 1,000 mile trip, or you don't know what you are talking about. The previous models with the 6 speed trans got about half the mpg as the new ones. But the new models get amazing mileage. One of the reasons I bought new over used.


Lol...what your saying, the 10R140 is the miracle worker, as the 6R140 only gets half the mileage? [emoticon] So with 6R140 7-8 towing and 11 mpg non-towing.

Anyway, you have a nice truck, and FW, and are proud of your rig! That is a good thing!

BTW: ford truck guy, also posted, that he can get 22 with same truck, with ideal conditions. I've seen him pictured, an honest looking Joe!

Jerry





way2roll

Wilmington NC

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Posted: 02/08/21 07:27am Link  |  Quote  |  Print  |  Notify Moderator

Lynnmor wrote:

way2roll wrote:



Well you should drive the new Ford with the 6.7 and 10 speed tranny and educate yourself. Either the Ford built in avg MPG calculator is off over the course of a 1,000 mile trip, or you don't know what you are talking about. The previous models with the 6 speed trans got about half the mpg as the new ones. But the new models get amazing mileage. One of the reasons I bought new over used.


I have the older 6.7 with a 6 speed transmission, can I just change out the transmission and get 40 MPG? [emoticon]


Yes! Good idea. You should try that today. Report back and let us know how it goes.

JKJavelin

Milwaukee, WI

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Posted: 02/08/21 07:47am Link  |  Quote  |  Print  |  Notify Moderator

With the rig in my signature I generally get 9-10 mpg manually doing the math. Last week from Wisconsin to the Florida keys I got 9.1. Fifth wheel weights about 11,500 lbs.
JK


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Retired JSO

North Georgia Mountains

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Posted: 02/08/21 07:59am Link  |  Quote  |  Print  |  Notify Moderator

rhagfo wrote:

valhalla360 wrote:

We got around 12.8mpg long term with a 1992 7.3 diesel pulling a 9k 5er.

More recently with a 2008 V10 gas pulling an 11.5k 5er was getting 7-8mpg.

Oil changes are about the same frequency regardless of fuel type and yes diesel oil changes are substantially more. We typically pay under $30 for the V10. If you do a diesel, it's rare to get under $100. But really unless you are putting on 40-50,000 miles per year, it's not the oil changes that drive up the cost of a diesel truck.


Well only true for Ford diesels, they used high pressure engine oil to pop the injectors which is hard on the oil, and requires more frequent changes.
Cummins doesn't do that and even with our old 5.9, we easily went 10,000 miles on a change verified with lab testing, could have gone 12,500 miles, but 10,000 was about what we put on in a year.


I believe the 6.7 uses Bosch high pressure common rail, the HEUI went away with the 6.4.





ford truck guy

Pennsylvania

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Posted: 02/08/21 08:22am Link  |  Quote  |  Print  |  Notify Moderator

MFL wrote:



Lol...what your saying, the 10R140 is the miracle worker, as the 6R140 only gets half the mileage? [emoticon] So with 6R140 7-8 towing and 11 mpg non-towing.

Anyway, you have a nice truck, and FW, and are proud of your rig! That is a good thing!

BTW: ford truck guy, also posted, that he can get 22 with same truck, with ideal conditions. I've seen him pictured, an honest looking Joe!

Jerry


Jerry... Jerry.. Jerry... Not so sure how HONEST I look ? [emoticon]

But I don't care one way or the other about my MPG as I didn't get a truck and larger fifth wheel to worry about those numbers..
and worrying about it, won't fix it in my eyes ! BUT - - - I do get 22 solo when I am behaving and on fairly level roadway

* This post was edited 02/09/21 10:03am by an administrator/moderator *


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Cummins12V98

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Posted: 02/08/21 09:24am Link  |  Quote  |  Print  |  Notify Moderator

Just double towed at 35k combined from Ehrenburg, AZ to Indio, CA at 60 mph and was right at 9mpg. No complaints for sure.

[image]


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

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inddel1313

Indiana

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Posted: 02/08/21 09:25am Link  |  Quote  |  Print  |  Notify Moderator

I will give you some REAL world numbers. I pull a 2016 Open Range 3X377FLR with a 2020 Ram DRW 6.7 HO Cummins, Asian 6 speed and 4:10 gears. The FW grosses at 16995 LBS. I will guess the FW is around 15.5 K when I pull. On a recent trip from Northern Indiana to Central Florida 1256 miles one way.
9.4 mpg at 62 mph. 9.1 @ 65 mph. 8.1 @ 70 mph. These were hand calculated. The lie "O" meter was .1 to .3 mpg off (+-). In Florida when not towing Lie "O" meter 18.6 hand calculated 17.3, 50 - 60 mph.


2020 Ram 3500 DRW 6.7 HO Cummins. 4:10 gears
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