Originally Posted by LandFakers
Spot on. Sure the air coming out of these motors is cleaner but I know for a fact that my brothers brand new 6.7 F350 drinks twice the fuel if not more than his old 7.3 F350. 18mpg with the 7.3, 8mpg with 6.7. Not sure how that is economical or good for the environment.
either he has something seriously wrong with the 6.7 or he has a6.4. i have a couple 7.3s and they dont get as good of mileage as the 6.7. go on dieselstop the new 6.7 is proving to be a good engine with great mpgs, better than all previous trucks even the 7.3 mileage wise.. and i love my 7.3s