As a new diesel vehicle owner I have been taking some time to look at the regen process. I understand the principles but have never looked at the detail. I researched this mainly because I do have periods where I only run short journeys at rural road speeds and wanted to understand what the risks are and what the warnings, if they ever appear, might be telling me.   Looking at the tech blurb on the EA288 engine http://www.briskoda.net/forums/topic/372793-self-study-guide-for-ea288-diesel-engin