Theres been some scattered instances of valve failures, nox sensors, and turbos, but nothing of the scope of 6.0.I have been wanting a new f450 but I am waiting to see how this engine holds up. I will wait for the failures to trickle in and see from there. still stinging from the 6.0
It uses both, but because of the urea, less regen is necessary.I guess I need to do a little reading about the 6.7.....I was sort of under the impression that one of the reasons the 6.7's fuel economy was improved over the 6.4 was that the urea took the place of the fuel consuming regeneration process....
Its been such a small amount that engineering is still investigating right now. Speculation had it that it was tied to heat variances (the 6.7 only uses 4 cylinders for regen).
It uses both, but because of the urea, less regen is necessary.
So far, its only been a few, and its the larger (450/550) chassis cabs. Its been such a small number that its difficult to pin down a cause.But enough regen to possibly cook a few valves. For all the books and money Ford spends on engineers you would think the engineers could grasp the basic concept that no motor ever likes wild temperature swings between cylinders. Most racers figured this basic motor trait out close to 50 years ago. I am sure the head gaskets like the temperature variance as well.
So far, its only been a few, and its the larger (450/550) chassis cabs. Its been such a small number that its difficult to pin down a cause.
Doing the first work on a 6.7 other than oil changes. 85k miles, turbo went bad. A real PITA too!