I did take a look at the diesel supplement after reading the 500 vs 1000 mile debate. I would imagine that would take precedence over the standard owners manual. According to the diesel guide you need to drive 500 miles before towing. I'm around 450 right now and decided to hold off on a 600 mile camping trip until I get a few more miles for the break-in. We'd be pulling an 8k wilderness camper across some steep grades crossing through North Carolina. Maybe next time!

As far as the oil change is concerned, I'll wait until the truck tells me to change it. I think anything else is overkill.. Especially with a engine that holds 13 quarts.