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 > 6.7 Diesel fuel mileage

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laknox

Arizona

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Posted: 02/28/19 01:49pm Link  |  Quote  |  Print  |  Notify Moderator

I'd love to drop my '02 body (and VIN plate) onto an '07 LBZ D'max and frame. Almost 100 more hp, few hundred more pounds cargo, lower tags. If can't do that, do an LBZ / 6-speed Allie build and drop that into my '02. :-)

Lyle


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MACHZER

Clandeboye

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Posted: 02/28/19 03:00pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2016 F350 Plat and it is always 17-21 unless in a heavy head wind
Towing however is around 10-12
It’s totally stock
My son has identical truck with larger tires and lift kit, his mileage dropped a lot


Clandeboye , Manitoba

Cummins12V98

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Posted: 02/28/19 03:11pm Link  |  Quote  |  Print  |  Notify Moderator

johndeerefarmer wrote:

Cummins12V98 wrote:

"Diesels have lost the fuel economy advantage that they used to have as far as towing goes."

Absolutely DISAGREE!!!

I towed 20,500# combined with my 98 12V 2500 SRW 4x4 hand calc West Coast toeing 10.5 mpg AVERAGE. The RV was NOT over 12' 6" and was NOT a wide body.

Same roads but 29k combined wide body 13' 2" high towed with 11 HO DRW RAM 4x4 9.5 mpg hand calc.

Same roads 33k combined wide body 13' 5" high towed with current 15 DRW RAM 4x4 9.5 mpg Hand calc.

Same as above double towing at 35k combined 9.0 mpg hand calc.

I say the mileage is MUCH better!


All of the older trucks got better fuel economy. The DPF, SCR and all of the rest have hurt fuel economy. Most guys that delete are doing it for fuel economy not to "roll coal"


https://www.drivingline.com/articles/59l-vs-67l-which-cummins-is-really-better/


Say what you want I just proved by my example with 3 Cummins powered trucks both of the newer trucks got better mileage "TOWING" "TOWING" "TOWING".


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noteven

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Posted: 02/28/19 04:34pm Link  |  Quote  |  Print  |  Notify Moderator

I like the new Ford 7.3. It has pushrods and doesn’t need to turn 6thousand eleventeen rpm to do the work. Burns gasohol.

Wonder how it would pull if it had a turbocharger?

slapshot12

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Posted: 02/28/19 05:41pm Link  |  Quote  |  Print  |  Notify Moderator

When towing, I get 11-12 the few times I’ve checked.


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'17 F-350 SRW Lariat CCSB 6.7 FX4

Lantley

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Posted: 02/28/19 06:19pm Link  |  Quote  |  Print  |  Notify Moderator

Cummins12V98 wrote:

"Diesels have lost the fuel economy advantage that they used to have as far as towing goes."

Absolutely DISAGREE!!!

I towed 20,500# combined with my 98 12V 2500 SRW 4x4 hand calc West Coast toeing 10.5 mpg AVERAGE. The RV was NOT over 12' 6" and was NOT a wide body.

Same roads but 29k combined wide body 13' 2" high towed with 11 HO DRW RAM 4x4 9.5 mpg hand calc.

Same roads 33k combined wide body 13' 5" high towed with current 15 DRW RAM 4x4 9.5 mpg Hand calc.

Same as above double towing at 35k combined 9.0 mpg hand calc.

I say the mileage is MUCH better!



I with Cummins12V98 on this.
Diesel are still delivering 25% better MPG's than any gasser on the market.
Yes the pre Emission diesels trucks may have got better mileage overall than the current generation DEF models.
However the current DEF models are a big improvement over the DPF era diesels when MPG's went down on diesels.
I'm not a big fan of the complexity of the current diesels but the current diesels all deliver lots of power and decent MPG's too.


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jmhartley11

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Posted: 03/01/19 07:19pm Link  |  Quote  |  Print  |  Notify Moderator

With my 2014 F350 crew cab short bed diesel I get: no trailer, no air condition 16-17 mpg, no trailer with air conditioning 14.3 mpg, 33ft. 5th wheel with air conditioning 9.5-11 mpg.

ppine

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Posted: 03/02/19 08:24am Link  |  Quote  |  Print  |  Notify Moderator

N-Trouble wrote:

How many times does this need to be repeated??

You don't buy a diesel to save money. You buy a diesel because you want/need the pulling power.


But often a diesel will save you money. You should not count on it, but it happens.

Campinghoss@51

Windsor NC

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Posted: 03/02/19 06:02pm Link  |  Quote  |  Print  |  Notify Moderator

I have never checked my mileage the old manual style since I have been running diesels. I do know that based on the miles I travel when I stop and fill up my 6.0 F-250 pulling a Sunnybrook fiver averaged somewhere in the 10 to 11 range. My diesel pusher Cummins motor home ran in the 9.5 to 10.5 range. My 2017 6.7 F-350 is running in the 10 to 11 range as well.
In my opinion you should never buy diesel thinking it is going to be more economical than a gasser. I purchased my F-350 because I needed it for the pin weight, trailer weight and more than anything else for the stability of a dually. JMHO.


Camping Hoss
2017 Open Range 3X 388RKS
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Retired JSO

Northeast Florida

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Posted: 03/02/19 07:31pm Link  |  Quote  |  Print  |  Notify Moderator

F350 DRW 4:10 gear pulling 8,000 TT got 12. Pulling 15,000 fiver gets 9.5. Will pull almost all grades in 6th gear even with cruise engaged with the fiver.





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