JESSE1
Veteran Member
I wonder if you were getting Low sulfur diesel instead of Ultra low sulfur diesel. Anything other than ULSD will cause all sorts of problems with the DPF.
I wonder if you were getting Low sulfur diesel instead of Ultra low sulfur diesel. Anything other than ULSD will cause all sorts of problems with the DPF.
If the mileage was that bad, there's a problem with that particular truck. My '08 F-450 with 4.30 axles averages 12 mpg, interstate driving as high as 14, pulling a heavy trailer it will drop to 10 mpg. The 6.4 trucks don't get the mileage that the earlier trucks get or the new 6.7 but if the mileage is that low there's a restriction in the DPF that a regeneration is not cleaning out.
I've been averaging around 14 mpg unloaded with a mix of city and highway driving on my 2010 F250 with the 6.4 liter Powestroke. When keeping the speed to a max of 70 mph I got about 18.5 mpg on the highway. Those are hand calculated mileage numbers too. The engine just hit 1,000 miles so those numbers are likely to improve a little bit after a little more break in. The 6.4 is a real hot rod if you want it to be, but if you drive it like a truck and not a drag racer you can get reasonable fuel economy. Do your best to keep the boost at 10 psi or less when accelerating and you'll probably like the fuel economy numbers.
wow.. 20.. I guess rolling down hill with the engine off I might get 20..
soundguy
I have a 09 Dodge with the 390hp Hemi and if I stay off the gas pedal, which is really hard to do, I can easily get 20+ on the highway. Now around town I only get about 15 or so. I have never hauled anything heavier than a couple of steers in horse trailer, and still got 14 or 15. This is my first Dodge and I love it. Although I am going with Ford for my next truck, just because of the no bailout stance they took.