i'm buying a 2007 mega cab 6.7 6spd 4x4 with 62K tomorrow, well at least thats the plan if the truck looks alright.


Anything i should look for? ( turbo, engine, or trany)


I read a lot of discussion about the 6.7 vs the 5.9. I'm going to be towing a race car with a 28' enclosed trailer.

What kind of fuel mileage can i expect empty or towing?



Should i hold off and buy the 07 with a 5.9 instead??



thanks for the info

 

The big complaint about the 07 & 08 6.7L CTDs was problems with the emissions control systems.

 

CTD's ???

So are the 07-08's a pile and I should look for something older or newer, or just plan on some ses lights

 

the emissions are all working well now and the 6.7's are not garbage but all that emissions crap really eats up the fuel, we had one and pulling a load only got 10-12mpg's and 15-17 empty, an identical truck we had with the 5.9 would get about 15-17 towing a good load, then we put a smarty on it and pulled a 26ft inclosed trailer to wyoming and back at about 25mpg's... there are some programers avalible, that allow your emissions stuff to "fall off", and can claim the milage back on the 6.7's

 

Yup, delete the EGR and DPF, add a set of gauges and a Smarty and the 6.7 is an animal.

 

Interesting, my 5.9 gets 15-15.5 empty, and 10-12 towing... Everyone I've talked to with around the same year truck as mine is getting about the same mileage figures as I do... I would love to know what the trick is to getting 15-17 mpg towing a good load, maybe something is wrong with my truck?

 

I have the same year truck as you I get better mileage then you Summer time I get 17+ towing Is difficult I don't tow campers. I tow boats some are 10 ft wide some are 8ft some are 6 ft tall some are 13ft 6 inches tall.
What really drops our mileage is winter blended fuel and poor driving habits. Racing to the next stoplight. good driving habits is EGT under 600 degrees F and single digits boost..

 

CTD stands for Cummins Turbo Diesel. A buddy of mine traded his 5.9 for the 6.7 and hated it at first until he realized it was just the emissions crap. He deleted the items listed above and got a tuner and absolutely loves it.

 

If Im doing all highway driving, I can get 17-18.5 mpg... All my driving is city/mountain roads, so my numbers might be skewed a bit, but I don't really see how it's possible to get more than about 21mpg in OPTIMAL conditions with a 7000 lb truck.
Scott

 

That is about right in mileage 17-18.5 I have seen 20.9 mpg once I was on highway rolling back from Nebraska to Chicago empty 25mph tail wind with higher gusts had something to do with it. on the way their 79 bayliner 25 ft long 8ft wide with a 12ft6inch fly bridge on top. I got 9 mpg or so. it was a parachute in the wind.

6.7s IDK if they can get that much maybe 2wd 2500s and grandpa driving at 55mph with low gear ratio. then I could see it getting great mileage. but 4x4 3500 DRW 4.10 gears not the greatest MPG maker..
Tommy