Forum: Diesel Powered 2012+ Export Grand Cherokee
02-27-2013, 09:36 AM
Re: Diesel People - Enlighten Me? (2014)
the soot reduction process (incineration in the DPF) increases NOX emissions during the regen cycle. Urea injection keeps NOX at a minimum while that's going on. My '07 CRD doesn't use Urea, and also...