I am not knocking the new diesels..This 6.4L is a brute.There are so many folks complaining about the change in performance and they must have been living on Mars not to have known about the effects of the new emmissions. We were full aware of the probable decrease in MPG (we saw that in our school bus fleet) and the effects of regeneration. My post refelect my experiences and IMO verify that the effects are real. It is still good to have a new truck and the next round of EPA regulations will be worse.
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