I drove quit a few F450 service trucks ever since the 7.3 non turbo motors were in them. They were all POS IMO, but the 6.0 is the worst diesel motor Ford ever used. Don't worry I'm not to thrilled with my Duramax either. Had to replace, cam sensor, gas pedal and computer back in Feb. at 115k miles. Before that (at 35k) had to have ac worked on (still not right) steering shaft, and steering box replaced. And every since they replaced it the power steering box sounds like it's out of fluid when turning to the right at slow speeds.
NONE OF THE TRUCKS NO MATTER WHO MAKES THEM ARE WORTH WHAT THEY COST!
Sorry had to vent a little