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
45Ricochet wrote:
Thanks
It will be interesting hearing the price to replace/or clean the added exhaust items when its time. Not sure how many miles they have in their life span.
The lifespan of a DPF is really dependent on the health of your engine (doesn't burn oil and injectors are in good shape) and how you drive your truck. Think of it this way a DPF can handle only so much soot/regen cycles until the metals/ash from the oil and residual carbon from soot clog the DPF to a point the trucks regen can't burn it off. I've seen quite a few 6.7 Fords with over 200k miles and a couple with over 300k miles with the original DPF, but these trucks are driven mostly highway miles and towing goosenecks which is probably the best senerio for DPF life. On the other hand I suspect a truck that's driven mostly in town will have a shorter life span. The above doesn't apply to the first generation DPF equipped trucks which are typically brutal on the DPF.
My '12 truck has 67k miles and since ~50k miles my truck actually regens less frequent now which to me means my DPF is in good shape and is no where near the end of life. I fully expect it to last at least ~200k miles and by then I'll probably have an itch for a new truck.
The good thing with the addition of DEF is there is less EGR volume therefore the engine can run more efficient which means less soot production and increased DPF life.
