Mpg [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Mpg


bsanders
08-14-2005, 12:01 PM
What kind of mpg are you guys getting? City/highway and pulling a load.



Thx
Boyd

bigchief1985
08-14-2005, 01:06 PM
Get you a 100 gal tank like mine and drive the truck!!!!!!!

Diesel_Day_Dreamin
08-14-2005, 01:24 PM
??? :confuzeld ???

bsanders
08-14-2005, 04:06 PM
Just trying to figure out who gets the better mpg GM or Dodge. My wife is trying to talk me into trading in my Dmax for a cummins becouse someone told her that dodge gets the better mpg.

Buckshotmckee
08-14-2005, 09:00 PM
On trips, cruising 70mph, I get 22mpg. Average freeway/town I get 18mpg. Towing I get 15mpg.

gtguy67
08-14-2005, 09:13 PM
I just traded my 04 DMAX CC SLT 4x2 for an 05 CTD QC Thundergoat 4x4. At 1600 miles on the Dodge I get 16mpg around town, got 15 to 15.5 at 35000 miles on the DMAX. I don't know if 4x4 drags down the mileage, but the Dodge is slightly better right now.

Dodger
08-15-2005, 10:42 PM
I have a 90 Dodge 2500 2 wheel dr with a cap. It gets between 850 to 900 km's per fill up. Ive measure it periodically and it gets anywhere from 26 to 28 mpg with or without a load..
I understand later Dodges don't get quite as good miliage.
It's got 210K on the clock. The engine has never been touched.
The engine raddle is music to my ears although others think it's a little noisey....
Rick

mydeuce
08-16-2005, 08:56 PM
Believe it not. I installed a Quadzilla box. It states that level 1 gives 60HP and 150 in torque and to leave it there if towing or just for fuel management. Well, for the hell of it I put her on level 2 (100HP/200 ft lbs torque) and cruise controlled at 65 for about a 15 mile stretch. (not towing) and averaged 32.3 MPG!!! In a dually!!! I left it in that level and in town avg 19.7 for 2 weeks without resetting the MPG computer. Needless to say, the module had definately paid or itself.

bubba33
08-17-2005, 02:04 AM
did you hand check that milage or go off the overhead? when you add a box you throw off the overhead it shows better then it actualy gets.

mudbug
08-17-2005, 05:37 AM
did you hand check that milage or go off the overhead? when you add a box you throw off the overhead it shows better then it actualy gets.

___________

I, too, doubt that is a hand calculation but am interested to see.

mudbug

Hawkster
08-17-2005, 11:49 AM
Getting 15 mpg in town. 18.5 to 19 on road unloaded at 70 mph. Towing camper about 7k lbs at 65 mph, 13 mpg. Hand calculated.

gelecon
08-17-2005, 08:28 PM
my mileage is similar to hawkster......drops fast over 70mph. I have gotten at best 21.6mpg running 60 for the 50mile drive each way to work. Usually average 17.6 to 18.4 and get around 14 towing. In town I plan on getting around 15-16's) (stock cummins 600 with air aid intake and mit.)

My d-max did around 14 towing the same load over the same terrain, and would do a around 18.7 on the highway. (LB7 with banks six gun)

mydeuce
08-17-2005, 09:01 PM
I'll post my AVG as soon as calculate the total miles driven when the fuel light comes on. However, this is an overhead avg. I called quadzilla and asked of the offset fom the installation. They say to reset the computer and give another go and it should read correctly. Not much difference.

Cummins600
08-18-2005, 11:21 AM
Mileage on these new 600/610 is definitely a topic for discussion. Before I added the Banks running 65 mph I got about 17.6 mpg (hand calculated) If I leave the Banks on #2 or #3 (25 to 50 hp) I get about 18.4 mpg (hand calculated) at 65 mph. A little better. I can run down the Interstate at 72 mph and I get about 18.9 to 19.3 mpg (best) and average about 18.7 mpg. These trucks were made for power....not fuel mileage!! Also, the more miles we put on them the better they do. At 6000 miles I think I was getting like 15 mpg at best.:eek: At 25k I am doing a little better as you can tell from above. Towing...well small trailers and such I don't notice a difference. The heaviest I pull is a backhoe and trailer (about 16k by the scale calculations) I don't pull it far enough to really get an idea, but I would say that I around 15 to 15.5 mpg based on my computer (which has never really been off by more than .5 mpg) Anyway :rant:

chevytrkr
08-18-2005, 05:17 PM
My diesel must be evaporating in tank. I only average 11 - 12 MPG whether I'm towing or driving around town. Highway I get around 18. That seems a little low for a diesel. Truck just passed 10,000 miles.

bsanders
08-19-2005, 12:12 PM
Thx for your replys. I'm running an 04lly duramax dually 4by4 with all the mods and the best I get is 14-16 mpg city/highway and 7mpg towing about 8000pnds. The dodge seems to get alot better towing! I like the dodge also but worry about the longevity of the whole package compared to GM.



Boyd

gelecon
08-22-2005, 07:58 PM
boyd.......not sure if the lly is lower with mileage than the lb7. Mine was doing around 14 ish hand calculated towing 8,000 lbs? My cummins pulls the grades great with stock setup with an 8.000 lb load and no shifting fourth to fifth like the allison it stays in fourth. I do miss the grade braking however.

bsanders
08-23-2005, 11:28 AM
I have about 15000mls on my lly crewcab dually 4by4. I'm getting about 7mpg towing around 8000pnds.And on a good day I might see 13-15mpg mixed city/highway.

tdupuis
08-25-2005, 09:53 AM
I have a bit over 58,000 miles on my '04 Cummins (yes, I drive a lot). This summer I drove 30,000 miles, entirely with a trailer attached. Yesterday I just did a 1,000 mile trip with my car trailer (empty) attached, and got 20.8 mpg on the first tank, and on the second tank I'm at 19.4 (it started raining, and rain has a very negative effect on mileage, I find). This is at 70 mph with an empty car trailer.

Two days ago I had my mom's Infiniti G35 on the trailer for a 550 mile trip, and got 17.0 mpg, also at 70 mph cruiser.

Over this summer I generally got 16-18 mpg with a car on the trailer, depending on the car. Of course, I got worse mileage driving across the Rockies (all four times), and when I was hauling a 2001 Dodge Ram 3500 ext cab long bed dually with a Cummins that had an unpleasant encounter with a tree at about 40 mph (worst mileage at 13.5 mpg). The best mileage I got was 22.3 mpg mpg going 60 mph with the empty car trailer. Today I will be making a 350 mile trip without the trailer attached. At 70 mph, I suspect that I'll be getting significantly over 20 mpg (although since I'm already a bit over halfway through this tank, I won't see for certain).

I have found several things over time.

1) My mileage keeps on improving the more miles I put on the truck
2) Towing DEFINITELY improves mileage.
3) The overhead has gotten significantly more accurate over time (I have the reflash TSB). In fact, now it is always within 0.1 mpg of hand calculated.
4) These trucks love to be driven on the highway for long distances with a load on the back. If all you intend on doing with them is hauling plywood and driving to work, buy a Hemi. You don't need a Cummins, and it's a waste of a motor. Furthermore, these motors ARE in fact miniature versions of what they put in semis. I have found that my motor is STILL breaking in at almost 60,000 miles, as the mileage keeps on improving, and the engine keeps on running better with age. This motor is designed to go at least 1 million miles on its original engine, it is not designed for short trips. If you want a domestic diesel, buy a Duramax or a PowerStroke. Better yet, buy a Jeep Liberty.

Should you switch from a DMax to a Cummins? Absolutely. But if you don't need the motor, buy a Hemi.

Craq
08-25-2005, 08:11 PM
Should you switch from a DMax to a Cummins? Absolutely. But if you don't need the motor, buy a Hemi.
But then we go back to the age old saying that the Cummins is a great motor wrapped up in a crappy truck. ;)

tdupuis
08-26-2005, 03:57 PM
As I was told (by a Cummins rep), when Dodge first started putting the Cummins in their trucks in the late 80s they said they'd guarantee the motors for 350,000 miles. Dodge responded by saying "We can't build a truck that will LAST 350,000 miles!"

Modern Dodge trucks have proven things have changed, though... there are a number of early 2nd geners running around with over 1 mil on the clock, and obviously the truck has held up well to the abuse. With 59,700 miles on my '04.5 and zero problems, I'm inclined to believe that the 3rd gens will be able to handle the same abuse.

thefermanator
08-27-2005, 01:40 PM
When I was working for a dealership I remember seeing quite a few second gen trucks come to town when the carnivals were there. And it was not uncommon to see them with over 350,000 miles and coming in for minor repairs(clutch or an alternator) and maintence work. They all loved the trucks, and the engines would still be humming right along. And those carnies would work the dodges to death(20-30 thousand lbs combined weight).

gtguy67
08-27-2005, 02:00 PM
I'm not sure why there is a misconception of the Dodge as a good engine in a crappy truck. I had an '03 Dodge 1500 QC that was great, but had the 4.7 gasser (=dog). Then I wanted a diesel and my GM fleet guy talked me into a GMC Dmax over the Dodge. I got an 04 LLY and if it could break it did. Actually the only good thing on that truck was the Allison, every other system had a problem of some sort over the year I had it, from the paint inward. I could have probably gone through a buy back, but when the Dodge dealer offered me my payoff, I never looked back.

locknload
08-27-2005, 09:11 PM
but too bad we just dont compare domestic trucks and never mind where the dodge is made,would never buy one for that simple reason.

Hawkster
08-31-2005, 01:12 PM
locknload,

Sorry you feel that way about furrin' stuff. Most of the Dodge parts are domestic and just assembled in Mexico. I would also suggest you look around your house at all the clothes, electronics, etc.. that you have bought not made in the good ol' USA. Just remember that when the Chinese start making good money (in 20 yrs) and we're all Walmart greeters, the manufacturing will come back here.

locknload
09-02-2005, 05:46 PM
doesn't make one happy about that either does it, walk into an ikea store made in sweden right ? wrong china there too, i'm sure there are lots of parts in all trucks made there too. why is it like that? because we buy it to try to save a penny

Hawkster
09-03-2005, 08:43 PM
Yep, not happy about any of it. Since everyone likes cheap stuff, my suppliers moved to Mexico a few years ago. Traveled there for awhile and then moved to Taiwan. Not cheap enough so went to Korea and now in China. Next is probably Vietnam or India. Course it's not all of the consumers fault, look at the profits the big guys are making. You want to p##s someone off, tell the Harley guy how many parts of his bike are foreign. Wheels, instruments, wiring and electronics, forks, shocks, and a host of other stuff.

hoot
09-03-2005, 08:55 PM
15 around town and a consistant 19-19.5 on the highway.

I'm a heavy foot. My around town could improve a mile or two if i took it easier.

locknload
09-12-2005, 12:55 AM
15 around town and a consistant 19-19.5 on the highway.

I'm a heavy foot. My around town could improve a mile or two if i took it easier.another thread you said you couldn't afford to keep repairing your tranny.........so you baby it ..........which is it?:lol:

Mr. D
09-16-2005, 07:50 PM
Just trying to figure out who gets the better mpg GM or Dodge. My wife is trying to talk me into trading in my Dmax for a cummins becouse someone told her that dodge gets the better mpg.

I don't know about the '06 models, but I had a '01 Cummins 4x4 and I got an honest 21 mpg on the highway at 65. The best I've gotten with my '02 Dmax is 18 mpg. The Dmax has advantages, but mileage isn't one of them. The 4x4 independent front suspension and the transmission are the big advantages. I hate straight axle side to side bounce and harsher ride. In a GM 4x4 the ride is much better, but that's just me! Also the torsion bar front suspension works better with a camper. It really fights sway. When I was 21 I didn't care!

Trying to give you an objective comparison. I don't cheer for trucks! I buy what fits my needs. I liked both Dodge Cummins and Dmax for different reasons. Putting a camper on it was the major decision point. GM's work much, much better with campers! (See Avatar.)

Have fun with whatever you get!

bubba33
09-17-2005, 09:14 AM
my mpg has droped a bit.I need to go pull something heavy to work it a bit.If the exwife keeps pissing me off Im going to go pull her mobile home off the blocks and drag it a 100 miles or so.that may help my mpg hehehe.

hoot
09-17-2005, 09:26 AM
but too bad we just dont compare domestic trucks and never mind where the dodge is made,would never buy one for that simple reason.


Stupid statement.

Cummins is pure bread American designed and made. Cummins is not owned by a foreign entity.

Dmax is Japanese designed with world components.

Both transmissions are American made.

The rest of the drivetrain pretty much is the same... AAM axles and NV transfer cases.

Your simple reason is plain dumb.

Then after you bash me look around. Look whos driving what around you... maybe even you drive a Honda or a Toyota.

Wait... I'm not done.

Don't buy a Chevy Equinox.... it's got a Chinese built V6
Don't buy a Saturn VUE... it's got a Honda engine
The Pontiac Vibe is a Toyota venture with a Yamaha engine and NO power.

And there's more where that came from so don't kid yourself.

locknload
09-17-2005, 01:28 PM
Stupid statement.

Cummins is pure bread American designed and made. Cummins is not owned by a foreign entity.

Dmax is Japanese designed with world components.

Both transmissions are American made.

The rest of the drivetrain pretty much is the same... AAM axles and NV transfer cases.

Your simple reason is plain dumb.

Then after you bash me look around. Look whos driving what around you... maybe even you drive a Honda or a Toyota.

Wait... I'm not done.

Don't buy a Chevy Equinox.... it's got a Chinese built V6
Don't buy a Saturn VUE... it's got a Honda engine
The Pontiac Vibe is a Toyota venture with a Yamaha engine and NO power.

And there's more where that came from so don't kid yourself.why do you play the naive game? you know exactly where those blocks are cast........you know where those trucks are assembled........does what they did make it right?.........my patriotic answer ,as we've seen countless jobs lost, would be h--l no! not acceptable. if we don't stand up and be counted the trade imbalance will continue to explode and we all lose. and if you think that it is so stupid, continue buying your imported goods ,but don't stop and ask yourself.... will we continue to be number one?.....,because the largest manufacturing country in the world has always become the most powerful. and if that doesn't rock your panties, it should . i wonder what oriental country that is .........smell the roses man! every little bit we do can help, always at least make an attempt to keep your money at home.........:ro) :ro)

mikmaze
09-17-2005, 02:17 PM
if we didn't have to pay some glorified bunch of hoods unrealistic wages to work an assembly line doing less than skilled labor then the trucks would be made here in usa, it is 100 pecent the fault of the workers thinking that they deserve to get paid so dam much that forced the asembly of the trucks beyond our borders otherwise the sticker price of our trucks would be over 100 grand . if you want more of the trucks made here try telling the uaw to ask for a wage decrease.

nickleinonen
09-17-2005, 10:36 PM
i get around 15-16 mpg around city... hwy ??? 99% of my driving is in the city and i feel the need to get to the speed limit [or a bit above] as soon as possable ;)

Hawkster
09-20-2005, 03:22 AM
Really I don't think I would put all the blame on the line workers. How about the honchos making hundreds of thousands and millions with bonuses? Our local Toyota plant works their people to death, they make decent money, but when they are worn out with carpal tunnel and back problems they are discarded. And BTW, most of the workers are temporarys with less benefits and wages. And profits go back to Japan from the made in USA Camry's and Avalon, etc..

Along with workers wanting a decent wage (I'm not union) give a lot of blame to corporate greed. And watch out for China. Their workers with overtime are making $60-70 a MONTH. Been there.

Barry Smith
09-20-2005, 06:19 AM
But then we go back to the age old saying that the Cummins is a great motor wrapped up in a crappy truck. ;)

I've never heard an informed and intelligent person say that!):h

Gas Ex
10-14-2005, 04:59 AM
I have about 15000mls on my lly crewcab dually 4by4. I'm getting about 7mpg towing around 8000pnds.And on a good day I might see 13-15mpg mixed city/highway.

My `99 dodge QC DRW with Edge EZ,AFE w/torque tube, 4" exh. is in the same ball park.
went Deer hunting and got 11.5 with camper and jeep behind tipping the scale @ 13,500 as package. did better coming home but didn't check it! Not much better! Same trip I did 14.95 in My LB7 without jeep and Juice/attitude on level 2.

Lennox69
10-17-2005, 11:40 PM
lockandload..i have not yet seen a vehicle made completly in the USA....assemble yes. alot of the parts are made over seas.....thanks to our aconomy...and competition.

Lennox69
10-17-2005, 11:46 PM
hoot.....cummins blocks are made in Mexico And Brazil...and the injection system out of germany!!!!!the the cummins are not all usa made!!!

Lennox69
10-17-2005, 11:49 PM
competition makes a man honest!!!!!!!!!! in business that is!!!!

MidnightBusa
10-26-2005, 12:37 PM
my 99 24v cummiins manual was getting 22 when i sold i at 80,000 miles i bought the d-max and am doing good if i get in the 18's with it on the highway most of my driving is at around 70 mph

i picked up a 95 2wd auto cummins this summer and it gets around 18-27 depending on how long my trip is and weather and for the most part it always has my bike in the back haven't drove it much empty it was getting 13 with a camper and 16ft enclosed trailer with 3 bikes in it and tools lugage and 3 guys also the my 95 is pretty much stock might have a filter

Cumminsdriver
10-26-2005, 11:18 PM
I get 22mpg on road trips running between 70-80mph with the mods i have. Having the timing advanced to 16.5* helped a lot.

Eric

J&L
10-28-2005, 08:34 PM
What kind of mpg are you guys getting? City/highway and pulling a load.



Thx
Boyd
Boyd
my '03 2500 HO 305/555 6 speed get 22 average on a 110 mile a day work commute. Towing my 11200 lb 5er it averaged 12.5 on our 3400 mile trip from OK up through TX/NM/CO/UT/WY and back. The truck has 53000 miles and all pencil figuers........JIM

TriSum
12-27-2005, 01:42 AM
What kind of mpg are you guys getting? City/highway and pulling a load.



Thx
Boyd

My 05 Quad Cab, LB, 4X4, auto averages 15-16 hand calculated. 70% highway, 30% in town. I drive in the 70-80 mph range. If I slow down it goes way up, but I get run off the road.

spencer ellsworth
01-05-2006, 09:31 PM
i have a dodge cummins (2005) and in town on stock setting i get about 10 to 14 in town,. h/w not sure