5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Whats your best MPG?

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  #31  
Old 07-18-2011, 06:35 PM
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@ sandman. get off your soapbox bro. you really think your the only person to ever go to war and get shot at. getting shot at for a year doesn't mean you dont have to follow the rules. save the cursing for the badlands.
 
  #32  
Old 07-18-2011, 07:00 PM
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My truck isn't stuck but driving about 7 hours south to Los angelas, I got 24.5.
 
  #33  
Old 07-19-2011, 02:31 PM
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Originally Posted by Rob_wells06
@ sandman. get off your soapbox bro. you really think your the only person to ever go to war and get shot at. getting shot at for a year doesn't mean you dont have to follow the rules. save the cursing for the badlands.
Rules are meant to be broken bro. And I know that im not the only one to get shot at. WTF are the badlands anyway? Im new to this forum.

Originally Posted by Gerry R
I am in the process of trading my 01.5 2500 for a 2004.5 3500 equipt just like yours, and was wondering about milage. I don't know yet which rear end the new one has but my old 2500 with a 3:54 and a Edge w/a set on tow or level one got 10 mpg pulling our 9k toy hauler. I would think the difference between a dually and srw might be 1 mpg.
Im not sure which rear end my truck has. The stealership said they think it has 3.73's with a limited slip diff. But they lied a lot so who really knows.

I had it for a week. Been in the shop longer than in my possesion. Between the body work from the blowout and then finding out that it needs upper/lower ball joints, both front u-joints, hubs(since they have to heat it up to get the ball joints out because there siezed in there from rust), rear transfercase output seal, and right side tie rod end/ draglink. Thats the list as of now.



Originally Posted by KingCopa
The new truck has 3.73 gears and they are good for me. This might sound strange but I'm thinkin when I go up to 35s it will get even better mpg with the lower over all ratio since the truck has plenty of power for towing it. I'm guessing it should be about a 3.55ish ratio with the bigger tires.
Im runnin' 35's right now but I havent really had a chance to do much driving. The fuel economy numbers were when I had the 33's on it. I need to do actually fuel economy instead of trusting the trip computer.
 
  #34  
Old 07-20-2011, 01:36 PM
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20 is the average with a smarty upgrade In town will suck because it's 6000+ lbs!
 
  #35  
Old 07-21-2011, 01:10 AM
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Originally Posted by dangerous1965
20 is the average with a smarty upgrade In town will suck because it's 6000+ lbs!
I know getting up there in mpg is a pipe dream. Especially with a QCLB. I just wanna see whats helping and hurting you guys out there other than your right foot.
 
  #36  
Old 07-23-2011, 11:09 AM
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Helping: Air in, Air out, programmer, Tires

Hurting: Bigger than 50hp injectors, Big tires, High programmer numbers, Right foot,
 
  #37  
Old 07-31-2011, 03:57 PM
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have 06 4x4 3500 5.9 411 rears only mods done so far are K&d cold air intake keep trk 55 to 60 mph and tack 16 to1900 rpm, and can only get 12 to 14 mpg. trk has 48 re trans with OD. How can i get 20mpg like you guys are talk'in...:
 
  #38  
Old 08-02-2011, 10:18 AM
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Originally Posted by roaddog51
have 06 4x4 3500 5.9 411 rears only mods done so far are K&d cold air intake keep trk 55 to 60 mph and tack 16 to1900 rpm, and can only get 12 to 14 mpg. trk has 48 re trans with OD. How can i get 20mpg like you guys are talk'in...:
I have a 6 speed. Torque converters and slush boxes zap as much as 30% of your power. And that 48re is a 3 speed with overdrive and lockup if im not mistaken. So there 5-ish gears there. More gears to use means not workin the motor as hard and its easier to keep it in the sweet spot.

Those are some pretty low gears for fuel economy, 3.73 is a pretty good gearset for the long haul. Those 4.11's are great for towing though.

Do you live in a hilly area or the mountians? Cuz that will kill diesel milage quick fast and in a hurry. Olympia is fairly flat.

Oh and Im usually runnin 70 down the highway.
 
  #39  
Old 08-12-2011, 04:17 PM
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im getting 17 city and 20ish hwy if i can keep my foot out of it. 06 4 door long box 4 inch lift 37'' mud terrains straight pipe
 
  #40  
Old 08-13-2011, 06:55 AM
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I have a 2005 Dodge std cab longbed 4wd w/62k miles, I drive roughly 350 miles a week city and freeway to and from work I let my truck idle for 5 minutes during ea. warmup. I stay up on all oil changes air filter cleaning and fuel filter replacements. I do run Howes diesel conditioner/ injector cleaner. I run a Bills Custom cold air intake with S&B conical air filter full 4" exhaust cat delete the truck has a 4" lift with 35" tall Toyo mud terrain Load "E" rated tires I run them at 62 psi. My truck with hard calculation is 20.09mpg yet the trip meter reports 21.9. Hope this info helps
 


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