102,000 miles on my 07 and no dpf issues. I tend to drive with a heavy foot on the go pedal so I do work the engine. My driving varies from the equivalent of city stop and go traffic to highway to heavy towing but it is variable from day to day.... So just drive it hard once in awhile and minimize idling it.

__________________
If you bad mouth farmers just make sure your mouth is empty
07.5 2500 quad, sb, auto,4x4, Big Horn. wheel to wheel nerf bars, amp bumper step
08 Jazz 36' 5er, 12,000lbs
28' PJ gooseneck,22,400 gvw