DODGE was DPF the first year of the 6.7 2013 or so they went to DEF they were the last to go...after treatment which os DEF diesel exhaust fluid metered into the exhaust after the motor as a catalyst for burning of soot the Diesel Particulate Filter DPF used fuel metered in on the exhaust stroke Cummins calls it the 3rd injection event it put small amounts if raw fuel in the exhaust to heat up and burn soot.
It is probably the easiest to remove the emissions on the DPF , but if you don't idle it a lot and do short drives you probably will have no issues . Keep in mind when these DPF equiped trucks came out in 2006.5 for the 2007 year they required the use of 10-15 ppm ULTRA low sulfur diesel and that was not st a lot of fuel stops yet so many trucks got plugged up from the wrong use if 500ppm diesel .
It is probably the easiest to remove the emissions on the DPF , but if you don't idle it a lot and do short drives you probably will have no issues . Keep in mind when these DPF equiped trucks came out in 2006.5 for the 2007 year they required the use of 10-15 ppm ULTRA low sulfur diesel and that was not st a lot of fuel stops yet so many trucks got plugged up from the wrong use if 500ppm diesel .