Gas or diesel

[Iwannacamp]

Originally Posted by Brian41

I have both a 2001 Chevy 3500 crew dually 8.1 Allison trans 4x4 with 46,000 miles and a 2015 GMC Denali HD crew dually diesel Allison 4x4 with 3500 miles and hands down towing or not milage is double on the diesel but the power difference is even a better reason. I bought the 2015 the day after I towed my new to me 5th wheel toy hauler home as I was going on a trip with the RV later that week and knew I would hate myself all the through PA with the gas truck. I still feel more comfortable with the 2001 but its been a 14 year love of the truck.......I think its time to let it go and be faithful to the new big guy.



DIESEL HAS MY VOTE

Ok...nobody quote me here...

That's a tuff looking Chevy...didn't hurt tooo bad.


Sent from my iPhone using Forest River Forums

[dustman_stx]

Originally Posted by schrederman

Just back from a trip that we take several times per year. My F-150, towing the same trailer, got 8.5 to 9.5 mpg... Now, with the trailer loaded heavier, because I'm not so concerned, we got 13.9 going and 14.2 coming back. The F-150 wound itself up to 4400 rpm maintaining 65 mph on hills. The diesel seldom downshifts. My daily driver mileage with the F-150 was about 17 mpg, usually. My daily driver mileage is about 19 with the new Ram...

The only Dodge 6.7 I've driven was a 1 ton dually. 65mph on flat ground and it wouldn't do better than 12 based on the DIC. This is a pre DEF truck and is obviously DRW- do those 2 things really make that much difference on the 6.7 Dodge????? I could understand a few mpg, but almost half???

[Brian41]

On my GM trucks the best I ever saw not towing with the 2001 gas was 11.2 mpg and 5.7 mpg towing our 40' long 12' wide 14,000 lb catamaran. With the new diesel truck it show the best recorded 50 mile mpg was 20.6 not towing and the worst was 10.6 towing the toy hauler.

[MeepMeep]

Originally Posted by dustman_stx

The only Dodge 6.7 I've driven was a 1 ton dually. 65mph on flat ground and it wouldn't do better than 12 based on the DIC. This is a pre DEF truck and is obviously DRW- do those 2 things really make that much difference on the 6.7 Dodge????? I could understand a few mpg, but almost half???

One of the things I learned with my 2013 RAM 6.7 DRW is that the DIC is off by an average of 2-3mpg when I compare it to my fuel logs. Around town, the DIC typically gives me 17-19....fuel log says 15-16. Pulling my appx 17,500lb 5er, the DIC indicates 11-13 whereas my fuel log has it at 10-11....

[RKR]

Originally Posted by jevanb

Attachment 65342

Nope, still kick'n.


Sent from my high tech gadget

[schrederman]

Originally Posted by dustman_stx

The only Dodge 6.7 I've driven was a 1 ton dually. 65mph on flat ground and it wouldn't do better than 12 based on the DIC. This is a pre DEF truck and is obviously DRW- do those 2 things really make that much difference on the 6.7 Dodge????? I could understand a few mpg, but almost half???

The dually probably has a much taller rear gear, and dual rear wheels don't help either. Do you remember your rpms at 65 mph? Mine runs about 1400. I do not go by the computer. The calculator on my phone, fuel pumped, and miles driven give me a good picture of what mileage I'm getting. Pulling about 7K pounds in mostly flat country at 62 mph and yes, the figures are right. The trailer's just not a strain at all.

The computer shows better mileage, like bass-boat speedometers... they're for sales, not for actual use. My last bass boat would bury an 80 mph speedometer, but the GPS showed me I was actually running 75.

[The_Rhino]

Dealer let us take a new loaded Lariat Super Duty out for a day pulling our trailer and it was sick the way it handled my trailer.

New trucks are supposed to be driven 500+ miles before first tow... Just another reason I won't buy a "new" truck with more than a few miles on it... How do I know what the last guy did to it test-driving it? WOT? 10,000 lb. trailer? Uneven R/R tracks at 60 mph? No thanks...

[jevanb]

Originally Posted by The_Rhino

New trucks are supposed to be driven 500+ miles before first tow...

that is just to set the rear ring and pinion, I know lots of friends that tow heavy from day one and put way over 200k without 1 single issue. Including myself..

[Salt Shaker]

Ok I'll say it.

I have come to the conclusion that the 2 main things men lie about are pecker size and fuel mileage.

I have yet to get 14 pulling anything with the three diesels I've owned. I might do 14 or 15 empty. (Hand calculated). 8-11 pulling.

The greenies ruined diesel for the working man with low sulfur diesel and the yuppies switched from beemers to diesels to pull 18 foot boots doubling the demand and bumping the price limits of insanity on new trucks ( and what red blooded male doesn't jones for a new truck).

We are fortunate to be able to choose. Give it a couple years and the progressives will have us bumping 7 bucks a gallon and buying back our 1tons for yugomatics.

The most realistic answer I've ever heard is when I was filling up next to a monster diesel pusher. I asked what kind of mileage he got and he said he averaged 11 mpg...5 mpg in town and 6 on the hiway.

Salt

[TURBS]

Originally Posted by Salt Shaker

Ok I'll say it.

I have come to the conclusion that the 2 main things men lie about are pecker size and fuel mileage.

I have yet to get 14 pulling anything with the three diesels I've owned. I might do 14 or 15 empty. (Hand calculated). 8-11 pulling.

The greenies ruined diesel for the working man with low sulfur diesel and the yuppies switched from beemers to diesels to pull 18 foot boots doubling the demand and bumping the price limits of insanity on new trucks ( and what red blooded male doesn't jones for a new truck).

We are fortunate to be able to choose. Give it a couple years and the progressives will have us bumping 7 bucks a gallon and buying back our 1tons for yugomatics.

The most realistic answer I've ever heard is when I was filling up next to a monster diesel pusher. I asked what kind of mileage he got and he said he averaged 11 mpg...5 mpg in town and 6 on the hiway.

Salt

Fact 12-13 towing 14,000 lb 5er
Fact 20 mpg empty

Cat delete
Dpf delete
Egr delete
4" exhaust stock muffler
Efi live tuned

Why would I lie? [emoji12]


Turbs

[TURBS]

Fact fuel light just came on .
Fact fuel light comes on after 20 gallons used
Fact I've driven 423 miles since last fill up.

You do the math. [emoji106] [emoji86] [emoji85] [emoji87]





Turbs

[Salt Shaker]

Turbs,

I have no doubt that deletes and tunes will get that. I guess I should have clarified my statement. Stocker form that the EPA has choked.

Salt.

[TURBS]

Originally Posted by Salt Shaker

Turbs,

I have no doubt that deletes and tunes will get that. I guess I should have clarified my statement. Stocker form that the EPA has choked.

Salt.

carry on! [emoji106]

Turbs

[B and B]

Don't they do E Tests for emissions in the states? If we have deleted emissions equipment in Ontario we get fined if it does not pass. After 7 years any car or truck is tested for emissions, large trucks annually. Would the EGR and CAT delete on a Duramax meet a test for emissions?

[TURBS]

Originally Posted by B and B

Don't they do E Tests for emissions in the states? If we have deleted emissions equipment in Ontario we get fined if it does not pass. After 7 years any car or truck is tested for emissions, large trucks annually. Would the EGR and CAT delete on a Duramax meet a test for emissions?

It most likely would not meet emissions testing standards.
Here in the midwest there is no emissions testing.

Turbs

[camper1999]

Originally Posted by f1100turbo

Fact 12-13 towing 14,000 lb 5er
Fact 20 mpg empty

Cat delete
Dpf delete
Egr delete
4" exhaust stock muffler
Efi live tuned

Why would I lie? [emoji12]


Turbs

X2 i have a stock truck no modifications. 12mpg towing 12000 and 22 empty.

[Salt Shaker]

Do you guys live in tail winds? I saw 23 hand calculated one time on a 300 mile downhill run with a 50 mph tail wind cruise on 65 in 6spd 5.9 cummins.

[TURBS]

Originally Posted by Salt Shaker

Do you guys live in tail winds? I saw 23 hand calculated one time on a 300 mile downhill run with a 50 mph tail wind cruise on 65 in 6spd 5.9 cummins.

If you do my math up above, hand calculated is actually more mpg then my dic shows.

Hand calculated 21 mpg
Dic 20.3 mpg

BTW it's flat land here in Iowa. .... [emoji12]

Turbs

[Canonman]

Originally Posted by Salt Shaker

Turbs,

I have no doubt that deletes and tunes will get that. I guess I should have clarified my statement. Stocker form that the EPA has choked.

Salt.

I'm with you SS. My 07.5 (basically an 08) gets similar milage and I'm only pulling the 7k lb. 22RKS. I think we got gyped!!
Actually I've heard that the frontal sail area drops the milage more than the weight.
Any how I didn't expect to get good milage with an RV of any kind. My 85yo Mom said there was only one thing my dad told her about going on trips with the camper. "If I hear one word about the cost to gas up I'll sell this SOB and we'll stay home." She never complained and they RV'd for over 20 years.

[transamz9]

My 13 Ram gets 9+- towing my 18,000# set-up and it really has not mattered whether it is interstate runs or back road runs. Empty on mixed daily driving it's 18+. Long interstate runs have been 20-21. Hand calculated.