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Duramax milage

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Peters
Join Date: Feb 2002
Posts: 3034 Northern AL
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2004-04-18          83495

I friend of mind has a similar GMC truck to my Dodge 3500. With the 6 speed and the Duramax he is averaging 12 miles a gallon.
I am at 19 and wish I had more. Is this common for the Duramax? I have never heard of a Cummins owner with that low of milage.


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plots1
Join Date: Jul 2003
Posts: 563 mo
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2004-04-18          83505

NO, that's not common at all . sounds like he's has an injector problem. the Durmax has had injectors issues. I regularly get 17 city and 19 to 20 highway running the juice edge. All them extra ponies seem to make the right foot a little heavy. Would probley get a mile or two better with a lighter foot. ....

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Fastcarrs
Join Date: Sep 2003
Posts: 5 Florida
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2004-04-24          84160

I have a 2003 2500HD 4X4 Chevy and I get 18-19 around town and if I keep the lead out of the right foot which is hard to do with the Duramax I can get 23 on the highway at 72mph. I realy like the MAX engine. ....

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husky125
Join Date: May 2004
Posts: 23 Indiana
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2004-05-21          86493

My 2500HD is fairly new yet, but I'm geting 15 to 18 in town and 22+ on the highway. I've been able to get around 15 on the highway pulling a loaded trailer (8000+ lbs) ....

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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2004-05-21          86499

There must be a problem with the truck, my 7.3 PSD gets 22 mpg and its pushing 400+hp, I cant believe a Duramax is that much thirstier.

Best of luck. ....

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DRankin
Join Date: Jan 2000
Posts: 5116 Northern Nevada
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2004-05-21          86501

It's those canadian gallons. They about a quart larger, eh? ....

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husky125
Join Date: May 2004
Posts: 23 Indiana
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2004-05-21          86505

In addition to the 2500HD, I also have a F250 with the PSD, it get about the same mileage with it. It doesn't see to have quite the towing power as the 2500. However, that could be all in the transmission. The 2500 has the Allison. ....

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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2004-05-21          86506

No Mark, those are US gallons. An Imperial gallon is 5 quarts not 4. The truck gets 27 miles to the Imperial gallon, which is about 22 miles per US gallon.

It got about 24 miles to the Imperial gallon before the mods., I gained 3 mpg doing the upgrades.

Best of luck.

....

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DRankin
Join Date: Jan 2000
Posts: 5116 Northern Nevada
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2004-05-21          86508

Bad week for Marks humor. ....

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yooperpete
Join Date: Jan 2004
Posts: 1413 Northern Michigan
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2004-05-21          86509

Mark:
I enjoy your humor. Please don't stop! ....

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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2004-05-21          86510

Well if you had said something about the cold Artic air creating a better charge and more efficient burn, or suggested that having the dog team harnessed to the front bumper helped, the humour might have been clearer, eh.

Best of luck. ....

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DRankin
Join Date: Jan 2000
Posts: 5116 Northern Nevada
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2004-05-21          86512

Yoop, thanks. I have to remember to do those little faces at the end of the sentence :{

Murf usually has his coffee by now..... Hmmm. ....

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Murf
Join Date: Dec 1999
Posts: 7249 Toronto Area, Ontario, Canada
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2004-05-21          86514

Especially if you consider how far east of you I am, I have a few hours head-start at the coffee.

Best of luck. ....

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yooperpete
Join Date: Jan 2004
Posts: 1413 Northern Michigan
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2004-05-21          86515

Humor is fine, but please no smiley faces! ....

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dwg
Join Date: Jul 2003
Posts: 5 Pennsylvania
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2004-05-31          87317

My 2003 2500hd, 6 speed, gets 19-20 around town and anywhere from 20-22 on the highway. Has anyone modified their fuel fill spout to accept the larger fuel nozzle? This really bugs me I fuel our VW Golf TDI (48-52mpg) which does accept the larger nozzle. ....

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Wallace
Join Date: Dec 2005
Posts: 33 Northeast Pa.
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2004-06-04          87693

NOT HAPPY with my 2004 Chevy 1 ton dually 4 door 4 wheel drive Duramax 12-14 miles per gal no power!
I have a 03 Excursion 6.0 liter and it will run circles around the Chevy and it does it getting 20 mpg
Is there something wrong with this Chevy?
I have 20,000 miles on the ford and 5,000 miles on the Chevy ....

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plots1
Join Date: Jul 2003
Posts: 563 mo
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2004-06-04          87695

The GM should come around once it breaks in some. I have had three guys around town here say the same thing about running rings around the GM , BUT when we line up they all got a good look at my taillights!




....

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