DEF - Diesel Exhaust Fluid Video
Since the question about DEF comes up here I thought this video can clarify some misconceptions and how DEF works in the Exhaust System. Enjoy... Link
Forum Discussion
45 ACP wrote:
NRALIFR,
Having owned both a 6.4 and now a 6.7, I can say with certainty that neither gave any constant indication of a regen taking place.
That was part of the reason I chose to install an Edge Insight CTS monitor. There is a small red "R" that appears at the top of the screen when a regen is taking place. The "R" appears about 10-15 seconds before the DIC shows "Cleaning Exhaust System" and it disappears as soon as the regen is over (or the truck is shifted into Neutral or Park).
As far as miles between regens, I can also say that my 6.7 performs regens about 40-50% less often than the 6.4. I had the same CTS installed in the 6.4 as I do now in the 6.7. I use both trucks as a daily driver and to tow the same trailer, so the comparison is valid in my view. The regen cycles are about the same length in time.
I get better fuel mileage out of my 6.7, even though I now own a dually (compared to the 2010 250 shortbed of my 6.4). Injecting raw fuel into the exhaust stream 40-50% less often must have something to do with this...
NRALIFR,
Sorry for the late response but it appears 45 ACP answered your question? Honestly I can't say what the life cycle of a DPF is on a 6.4 since most have deleted them. Having said that these emission systems really need to be highway driven to live a long healthy life. I know a guy at work that has a all stock 09 6.4 PSD and his daily commute is ~ 45 highway miles and he's approaching 160k miles with no issues on the DPF.
