Fuel Milage

[DAVE Thompson jr]

A guy that I work with bought a new 2011 duramax 4x4 $62000.00 and says that it only gets 14 mpg empty and when pulling an empty 5ooo pound trailor 300 miles is dropped down to 8.4 mpg. He said his 2006 got 19 empty and around 13 pulling a loaded trailor. What are you guys getting mpg with your Duramax 4x4 trucks. I am going to purchase one but would like to get better than 8 mpg pulling a light trailor. Would any one out there have a newer one that they are wanting to sell?

 

[s.billy]

I've got a 03 dodge single wheel one ton with 275000 on it and a 6 speed trans and get 20 empty and 11.5 hauling a 12000 camping trailer

 

[buickanddeere]

What ever you do, it isn't 2002 any more. Just because they all burn diesel fuel, doesn't mean late model diesels of any manufacture. Non can compete with the simplicity, efficiency and reliability of an old Cummings with a mechanical injection pump.
Figuring the cost of the diesel option,the higher price of fuel and the extra service costs. With the more expensive diesel trans, engine, fuel and air filters.
Lets see there is also urea injection, variable vane wastegates, 30,000psi injection, glow plugs,dual batteries, cat converters and particle filters.
The 2013 diesels will have a tough time competing on a cost per mile against the 2013 direct injection gassers.

 

[kak]

I have a 2008 crew cab short bed 4x4. It got 19.7 mpg this tank empty. It gets 10 mpg pulling my 28 foot duel tandem gooseneck with a 560 that weighs 10k and it gets 8.5 with two tractors. Very strong trucks I had a 07 that was faster but dnt think it pulled as good.

 

[jimedd]

dieselplace.com or duramax forum.com are very helpful

 

[Cody Meister 2]

Have a crew cab 2004 duramax 3/4 ton average 25-27 MPG hwy and 17-20 with a loaded up 25ft gooseneck flatbed. Have a BD diesel programmer and the muffler is cut out. Love the duramax will never drive anything else

 

[Dr Gago]

Have a 08 Dodge with a Cummings 6 speed auto. 23 mpg no trailer, hauling 32' trailer with 16000lb 13.5 mpg. Empty trailer 15 mpg. All emissions gone! Best $1700 spent.

 

[630rich]

My 01dmax got 19 empty and 14.5 with my gooseneck and 9500lb 630. I have an 06 cc drw 4x4. It has some work done but empty it gets 20-22 empty and 16 or so with the same load. And never had an issue with either truck and wouldn't own any other diesel.

 

[buickanddeere]

Some time on a trip check the trip odometer reading with the actual known distance.
Instead of dash mileage readings. Measure the actual amount of fuel added to the truck in gallons, don't use the truck fuel gauge to calculate gallons. Then calculate the actual mileage after covering a known distance.
I don't want to disappoint you but your truck likely has the 30 gallon tank. Try traveling without the trailer more than 600 miles on a tank of fuel. And you will be walking to the closest diesel pumps.

 

[Anonymous-0]

Thats about what I get with my 04 double cab. Theres a guy in Paulding Oh. who will change the settings with his lap top. Upped me about 4 mpg overall. No gauges, chips or ad ons. I've got about 140,000 miles on it and it seems to be getting better all the time. Bro-in-Law has a 2009 Ford Double cab and he only gets around 13 around town. His mech told him chipping it could be a slippery slope if under warranity. After that he said bring it in and I'll get you some decient milage. I'm not sure I'd like fire coming out of my tail pipe like the new ones due.
BTW, My fuel tank is only 24 gals.

 

[JD hauler]

2005 CC dually dmax, empty to work, alot of hills, 17.5 to 18, pulling a 10k fifth wheel camper , 13.5 on a 9 hour pull, gooseneck with both my tractors, total 15k, 12 to 13. and it pulls like it aint there.

 

[buickanddeere]

What ever mileage you are getting. The only way or certain is to fill the tank to the brim. Drive an exact known distance then fill the tank to the brim again.
Anybody who believes the dash display mileage would also believe every promise made by politicians before an election.

 

[oros35]

The new trucks don't get the milage the older trucks get.
If it's brand new, I would expect the milage to increase over the first 10K miles or so. Trucks still tight, they improve once they are broke in. Plus there is the "new truck" factor, probably enjoying the added HP at the expence of fuel milage and not even realizing he is doing it.

Also Diesel MPG's posted on the internet are like your cock size in highschool...better than it really is.

 

[s.billy]

Mine was figured on how many miles I drove and how many gallons it took to fill it back up. The computer tells me I'm getting 26.4 when I'm really getting 20 because of the chip

 

[SouthernFarmall]

My 2002 Duramax can get 20-22 MPG unloaded if the RPMs are kept just below 1500. This translates into 52 MPH. It will get about 19 running 55. Loaded, mileage will drop. Pulling an 8000 lb camper, I usually get 11.

SF

 

[gpuller]

Never heard of these CUMMINGS engines? What manufacture uses them. I know my 12V CUMMINS runs great.

 

[LCB]

I have had big block gas trucks and two commnings disel and there is no way a gas will pull with a disel are get as good millage.

 

[TERRY HAYES]

hey silly thats cause you have a RED truck

 

[Dmack]

I have a 97 F 350 with a powerstroke that has always got 15 to 16 mpg running empty and 12 to 13 mpg loaded. When I say loaded I mean a 36 ft gooseneck that weighs empty about 8000 lbs with three good size tractors on. Last year, I had to replace the brain because of a malfunction and now, I get 14 pulling a load and 17 empty. I am told the new brain has updates in it that the original one did not have. I guess i will keep on driving my stroke. The new ones scare me.

 

[kruck]

Anything after the 7.3 diesel are junk.

 

[Anonymous-0]

My 2011 Duramax 2500 crew cab gets 14-16 empty around town and 18-20 on the highway. Towing 22K, the worst I've seen is 9.2, generally it hangs around 13town though. I can not complain, my 08 xcab Duramax got 16 on the highway, 13 in town and around 11 towing.

 

[buickanddeere]

Nobody here ever said a gasser gets as good of mileage as a diesel. However the margin will narrow with the direct injection gassers.
So just how much cheaper is gasoline than diesel?
How much more expensive is it to purchase a diesel rather than a gasser in an otherwise identical truck?
How much HP do you need in a pickup hauling a 10,000lb gross load, 400HP? How did truckers ever manage to haul 40 ton of fright plus the weight of tractor and trailer. Across the entire country with two mountain ranges with a 318?
Powerwise? Ever check the HP ratings of the 2011 gassers vs. the 2011 diesels? There isn't enough difference to be bothered.
Good luck with all the service costs of that diesel with higher priced filters and more oil to change.
Then just wait for the bill when the common rail injection system, glow plugs, urea injection, particle filter, variable wastegate and dual starting batteries need service.

 

[SouthernFarmall]

I have figured the cost of diesel vs gas, considering the cost of fuel. If your diesel gets 20 MPG, and your gasser gets 14, and the price of diesel is $3.80 and gas is $3.25, it looks like this:

Cost per mile (diesel) - $0.19
Cost per mile (gas) - $0.23

If your diesel gets 18 MPG and your gasser gets 16 and the price of fuel is the same, it looks like this:

Cost per mile (diesel) - $0.21
Cost per mile (gas) - $0.20

Just divide your price per gallon by MPG and you get your answer.

SF

 

[Mopower]

1995 F-250 Powerstroke: 2wd, 5spd, 3.55axle ratio, 265-16 tires, mod turbo pipe, chip upgrade, 3" exhaust.

Empty, flat ground, regular state hwy, 62mph:

24.3 MPG

25' gooseneck double axle, 4-bottom plow, M-M U Standard Diesel Special, supplies, up and down along the Mississippi from NW of Debuke, IA to Benton Harbor, MI:

14.5 MPG

225,000 miles and running strong since 2005. $3500

Yes, I'm boasting.

 

[BAD ATTITUDE]

I work for a construction company with over 60 single wheel F-350, 4 door, short bed pickups. We went threw and throughly tested the 2011 trucks. Gas 6.2 averaged 10 mpg, diesel 6.7 averaged 13 mpg. Diesel was 14 thousand more per truck. When gas was $3.60 and diesel was $3.90, you would have to put 1.3 million miles on the truck, just to make up the cost difference in purchase, when you figured up maintainence differences, you are looking at 1.5 million miles. Good luck getting that out of any truck these days.

 

[muth4430]

the emmisions restrictions on the new trucks are terrible. it has killed the fuel milage on all of them. my buddy has an 08 he spend 1500 bucks on the remove that stuff and he got his milage up to about 20. it sucks to pay that much for a truck and then have to put that into it to make it get some kind of mileage. then you need an inspection buddy. on top of poor milage, you have to run that urea (or how ever its spelled) which drives the fuel cost up even more. find a good used 06.

 

[F-350]

All of the newer diesel trucks in my area are getting lousy mileage.....Most of the owners wish that they had kept their old ones...