Stay with the trucks that have the DEF system, those trucks get better mileage and put up with light use a lot better.

It is not a dodge but my company truck is a 2011 F350 with the 6.7 power stroke it has a def system. It is a retired route truck so it pulled a 14,000lb trailer for the first 160K of its life and it still does on a pretty regular basis when needed as a spare. At almost 200K miles the only emissions problems we have had with it has been EGT sensors and the heater in the def tank went bad. We ended up on the hook for one of the EGT sensors but the next one was covered under an extended warranty ford did up to 180K. Like i said not a dodge but an example of good luck with the emission systems. We would have a dodge but the newer 14000gvw puts us with a licensing problem.