2350 differential pressure severe

[Rawze]

the DPF does not make the soot.. the engine does. Start by doing a full EGR-tune-up on it ..
ref: http://rawze.com/forums/showthread.php?tid=7&pid=9#pid9

followed by a rail leak test ...
ref: http://rawze.com/forums/showthread.php?t...2#pid69262

followed by an overhead valve adjustment and anything else it needs for its age.

Also do a CAC and air/boost leak tests on the engine.

THE ENGINE is what gets into dire straights long before any of those pesky DPF issues start to set in.

As far as it requiring parked regens.. if it is at that stage.. it is too late. That thing cannot clean those filters like new again no matter what you do. Remove the DOC and DPF.. take pics of their faces to see what is on them and post them on here for some opinions as to why they are clogged up. After that, take them to a certified stealers$it and have them baked, de-ashed, and flow tested. -- Only after you do all of this to them should you do a "Maintenance reset" in insite... and of course, after re-installing them, you need to do this.

anything less and your just chasing your tail on it over and over.