all of you guys think the 6. 7 is so great, what about diesel in the crankcase,what about the plugged dpf,what about the bad fuel mileage, 7. 8 to 9. 2 if you drop it off a mountain. blown up 6. 7 plus turbos, spend more time in shop that it is on the road. they said they built a semi out of a 1...