This will be more for the Dodges since I own a few of them.
The '07.5 through '09 are the most problematic. Don't let them idle, drive them like you stole them even while towing. My '08 has lost boost pressure and has had other issues with the EGR and DPF systems, so I'm just working on them the best as I can.
'10 through '12 are better, but again, drive them like you stole it.
'13 and newer with DEF are running better, but you need to make sure the DEF doesn't go bad. It will start forming tiny yellow balls in the bottom of the container, so if you see them don't use it.
-Kris