From Homer Hogg, Manager of Technical Development for TA-Petro:
Hardly a week rolls by without someone involving me in a conversation about an engine that won’t perform an after-treatment regeneration. The conversation is usually followed by a request to force a regen. It is critically important to know that if your engine will not regen, a defect must be identified and corrected. This article provides some much-needed information and, hopefully, clears up some misconceptions.