Al05

I recently purchased a new 2008 Super Duty truck. The mileage sucks I have approximately 3800 miles on it. They said not to even check the mileage until after 2000 miles. I tow a 5th wheel and towing I am getting about 8.9 mpg average. Anyone have a similar problem? We are already thinking about taking a loss and trading. We had a 350 Dodge Diesel (actually two of them) duallys previously and the mileage was about 12-14 towing. Any ideas short of getting rid of this already and taking a loss?

wwb

I'm puzzled..... I have a 2006 F250 with the 6.0, and towing a 33' Travel trailer (not as tall as a 5th wheel, but still a lot of air resistance) I get 14 - 15 as long as I keep it between 65 and 70. If i get over 70, the mileage drops like a rock.

sixpack1

I have a 2000, 7.3 when towing above 70mph he's right the milage drop drasticly. When I stay above that mpg are alot better 12-13mpg. You may want to give the new truck alittle more break in miles.

Al05

Thanks for your thoughts on my lousy mileage...On the way home from our trip we got all the way up to 10.3...so, I will give it some more time and see what happens. DieselPower Mag had a whole article and said they got about 19 mpg...which of course, is most likely unreal, but towing, I would be happy with at least 12-13...We shall see.

Thanks again.

Al

thuferin

I hear/feel your pain. The mileage does suck. My buddy has a 2007 super duty 350 dually and he gets better mileage then me towing his 5th wheel. I am surmising that we have to give the truck more time, however, I may give in to the voices and sell my fith wheel, trade the 1 ton in on something else and get a pool. I think the mileage may improve considerably after that.

greggandsons

I have the same problem with mileage. I have a 2008 F250 diesel and I bought a cool air intake and a diablo predator tuner to help with mileage. I am averaging 11.4 mpg and that is just driving without towing. I really stinks and I am wondering if there is something wrong with the truck because everyone I talkt to seems to think that is low for a diesel. I have over 16,000 miles on mine.

v8motorcyclema

Let that baby breathe! What I mean by that is....get an exhaust system which will allow that big boy to breathe. That tip also should include a K&N filter. These new trucks stock intakes and exhausts restrict performance a lot.

The above plus a little bit more on the road miles will help loosen her up.