Thanks for the info. Will using Bio-Blend diesel have any affect? It's almost impossible to find 100% diesel where I am.
There are two types of regens. Active and passive. The passive regens happen regularly and you will not get a message on the EVIC. The active regens are a more aggressive regeneration (deeper cleaning of the DPF) and will display a message on the EVIC.
That's the cliffs notes version.
Here's a page on cummins that explains a little more.
http://cumminsengines.com/cummins-particulate-filter
Craig