MPG on a duramax??? Empty

Coachmenguy · February 20, 2007

i have an 03 with the 6.0l and was thinking of getting into a diesel, i have a 30ft travel trailer so the truck would get used from time to time but it would also be a daily driver, so i was wondering what the MPG on the d-max is empty and loaded??

Shaners · February 21, 2007

I saw about a 30% improvement in everyday driving when I went from my 6.0L (2001) to my Dmax (2005). Those numbers seem to stand for both empty and loaded...

mini1 · February 21, 2007

The MPG change would be fairly significant. Once you get a Diesel you don't go back to gas.

way_out_there · February 21, 2007

My numbers ( I've only had the truck for 1 month ) :

Empty: 16 - 18MPG , but I live in a cold climate, so there is some high idle time involved.

Towing: 8500lb enclosed trailer, mostly freeway, 14.5 MPG. But with TONS of power to spare

Love my D-Max!

HDdave · February 21, 2007

My dad's D-max usually stays on highways, he uses it to get to work in the city, and we live about an hour away.. I have seen that truck get as high as 25mpg on the highway. He has a Hypertech chip in it, so that helps a little..

VortecMax · February 27, 2007

I drive both a 6.0L for a personal vehicle and a Duramax for work, both have programers, CAI systems. The Duramax gets 32mpg on the highway at 70 mph, my 6.0 will get 20mpg at 70mph. When full loaded the Duramax mileage drops to 17 mpg and my 6.0 L drops to 12 mpg. I can tell you that the Duramax is ENORMOUSLY STRONG engine with that programer on.

Shaners · February 27, 2007

The Duramax gets 32mpg on the highway at 70 mph, my 6.0 will get 20mpg at 70mph. When full loaded the Duramax mileage drops to 17

What??? Please tell me what programmer and cold air intake you have so I can get one too... Those numbers are too good to be true!

Draenor · February 27, 2007

I just notice this too. If I can get this gas mileage, sign me up!!

dewfpo · February 27, 2007

The Duramax gets 32mpg on the highway at 70 mph, my 6.0 will get 20mpg at 70mph. When full loaded the Duramax mileage drops to 17

What??? Please tell me what programmer and cold air intake you have so I can get one too... Those numbers are too good to be true!

X2 !!!!!

32 mpg with a 7,200lb truck at 70 mph.......... Where's Al Gore?

DEWFPO

way_out_there · February 27, 2007

QUOTE(VortecMax @ Feb 26 2007, 11:00 PM)

I also have a Duramax 05 as a work truck and Diablo Sport tuner and that thing will get 32 mpg empty on the highway at 70 mph.If I had the money I would be buying a Duramax to do the hauling.The power is amazing, you tend to forget that you have a load behind the truck.

I have to say, this sounds like a tall tale. You are claiming to get a 50% improvement in fuel economy over what just about anyone else here has posted.

Are you using some other type of product/equipment/enchancement that you aren't disclosing? Are you developing said product? Are you sure your odometer/ vehicle electronics are in proper calibration?

I think if you can make these claims, you should be able to answer those questions. If your #'s are true, there are a lot of Duramax owners out there that would like to know your secret... and I can't believe that driving like an old fart can do all that!