07 And Up Dura's

Redneck56 · July 9, 2009

Im just trying to get the real numbers on what everyone is getting for fuel milage. Ive herd as bad at 14 MPG unloaded to 24 MPG unloaded. just looking to see what everyone on here agrees what they get. My parents have an 02 dura that get 24 unlaoded 14 loaded with the big fifth wheel Im telling them they cant beat that but want the numbers to back me thanks

markw8 · July 10, 2009

Im just trying to get the real numbers on what everyone is getting for fuel milage. Ive herd as bad at 14 MPG unloaded to 24 MPG unloaded. just looking to see what everyone on here agrees what they get. My parents have an 02 dura that get 24 unlaoded 14 loaded with the big fifth wheel Im telling them they cant beat that but want the numbers to back me thanks

New 08 CC dually. 1st tank unloaded 15.1. At 800 miles with the truck camper, 11.2. Best with camper at about 1400 miles 12.3, speed was under 60 on this tank. Last tank coming home 68-70 mph and 1800+ miles 11.7. Truck empty with 2 people 7700#. Should be about 11,000-11,200 loaded.

Mark.

dogzapper · July 10, 2009

A straight '07 Duramax would be an LBZ with the six-speed Allison 1000 transmission; some call this the "Classis." My 2006 is precisely the same rig. I get 19.0 to 20.5 mpg unloaded on the highway. Around town, my mileage averages 15.0 mpg (my last 1,200 miles were totally city driving and it hand calculates at 15.1 mpg). Towing our 28-foot trailer house, we average 12.7 mpg.

The LMM engine, with the added emmission control, was introduced in the 2007.5 model.

I suspect that your question is about the LMM.

Generally, the mileage of the LMM is lower than the older Duramax configurations. The LB-7, LLY and LBZ Duramax engines were less emmission controls.

Another round of added emmission standards will be present on the 2010 model Duramaxes and the MSRP will be dramatically higher.

Steve

pwall · July 11, 2009

I get approximately 20mpg on mine, which has the LMM engine.

When towing my 7500lb travel trailer (which is half the towing capacity) it drops to approximately 12mpg. Although this week out camping, I averages 17.1l/100km which works out to 13.75mpg. (that's at 60mpg)

cfeiring · July 12, 2009

My truck below

I avg for the year that I have had the truck 15.8 aprox miles to the gallon of fuel.

That is mixed driving aprox 60 city and 40 highway miles over aprox 13 k miles.

My truck is factory except a few cosmetic mods noted below.

Redneck56 · July 12, 2009

thanks, yes i was talking about the LMM model.

BlackSilver · July 15, 2009

My truck is an '08 LMM, 3500HD crew cab, 6WD. Bone stock, except a bed cover.

Unloaded highway miles are about 18.5, around town 16.

Loaded (pulling 7-ton5th wheel camper) I get about 11.5 highway on average terrain, less in the mountains.

Driving habits are "do the speed limit", but no jackrabbit starts.

Big pickups like this aren't about economy, they're about getting the work done. You want economy, I've heard good things about the new Ford Focus.

duradave · July 25, 2009

Unloaded 16.5 with about 75% highway. Pulling 6000# only about 11.2. 2008 silverado 2500HD Z-71 duramax/allison

Griptruk · July 26, 2009

My truck is an '08 LMM, 3500HD crew cab, 6WD. Bone stock, except a bed cover.

Unloaded highway miles are about 18.5, around town 16.

Loaded (pulling 7-ton5th wheel camper) I get about 11.5 highway on average terrain, less in the mountains.

Driving habits are "do the speed limit", but no jackrabbit starts.

Big pickups like this aren't about economy, they're about getting the work done. You want economy, I've heard good things about the new Ford Focus.

I have to take issue with this statement. Certainly fuel economy is not the top priority of this vehicle segment, but it is certainly a consideration, and I think there are lots of posts on this forum to indicate that buyers of these trucks are concerned about fuel economy. I have to imagine the OP's parents are deciding either between a new diesel or gas, or between staying with their current diesel or upgrading to a new one.

Besides the added Torque (and cool factor), the next thing people use to justify the additional 5-7 thousand dollar initial purchase price of a diesel truck is increased Mileage. Especially when there will be a lot of highway miles, I think a lot of people think the long term fuel savings will offset the higher vehicle price.

-Jer

BlackSilver · July 26, 2009

Besides the added Torque (and cool factor), the next thing people use to justify the additional 5-7 thousand dollar initial purchase price of a diesel truck is increased Mileage. Especially when there will be a lot of highway miles, I think a lot of people think the long term fuel savings will offset the higher vehicle price.

-Jer

I'm not sure what's "cool factor" about diesel engines.

I'll stick to my original statement. Diesels are built to work for a living, not to save you money. If your decision is based on fuel efficiency to "make up for the difference in price", then you probably don't need a diesel.