Mileage
I just replaced my 2001 7.3 powerstroke with a new 2016 6.7 powerstroke 4X4 I know the 6.7 won't get the mileage that my old truck got but once it's broke in what kind of mileage are you 6.7 owners ...
Forum Discussion
Break-in mileage is NOT a myth. I've experienced it personally with two different brand new trucks spanning 13 model years.
The current truck had a sudden jump in fuel economy at 500, and again at 5000 miles. Probably a computer thing.
The current truck had a sudden jump in fuel economy at 500, and again at 5000 miles. Probably a computer thing.
