DEF in diesel SCR systems.
Modern diesel engines require the use of DEF fluid to meet the clean air standards. I tow with a 98.6 Dodge Cummins powered truck, thus no DEF is necessary. But those who have the newer versions of Di...
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tinner12002 wrote:mpfireman wrote:
Modern diesel engines require the use of DEF fluid to meet the clean air standards. I tow with a 98.6 Dodge Cummins powered truck, thus no DEF is necessary. But those who have the newer versions of Diesel engines, I think after 2006 or 2007 need this DEF fluid. Reading the April 2016 issue of Trailer Life, there is an issue on the limited life of this DEF fluid. This fluid can degrade over time and is less effective, and may even cause trouble codes to illuminate your CHECK ENGINE light. The approximate shelf life is 36 months at 50 degrees F
18 months at 77 degrees F
12 Months at 86 degrees F
6 Months at 95 Degrees F
2 Months at 104 Degrees
Side note, DEF fluid will freeze at 12 Degrees F
I was one who was on the non def side of the fence but after seeing and hearing the reports for a couple years and feeling much more relaxed about its use, I'm on the def side now and very happy with my current truck.
X 2 Same here, now that I have a truck that uses DEF I'm glad I switched or up-graded. No more cleaning soot off the back corner of the truck or the fiver.
Dan
