I recently sold my 7.3idi (great truck) and bought a 2004 cummins with a 6 speed manual transmission. so far I love the truck and have no complaints. But I could stand to know more about it and diesels in general, so I was hoping so of you could tell me of some problems to watch out for and preventative maintenance. Or anything else you think I skould know? I just really want to take care of it, and what better way to learn then from the experts! Any infoation is really appreciated!