FishOnOne wrote:
DirtyOil wrote:
Why would the oil be black, the 2013 3500 is using DEF no more reason to have the third injection event to reduce nasty tailpipe emissions. This is what made the oil black in pre DEF Cummins powered Rams, that fuel wasting third event.
The '13 still have to regen to burn the soot collected in the DPF. The use of DEF eliminates NOX in the exhaust which also helps reduce soot production by allowing less EGR volume but does not eliminate soot produced by the combustion process.
From the 2010 and 2012 models, once you had an oil change, in just a couple hundred miles or so, the oil looked "dirty/black". I had almost 1,000 miles on my truck when I checked yesterday and the oil is not dirty looking it still looks very clean. There is a difference in how much cleaner the oil now looks in the 13 compared to my 10 and 12 after the above stated mileage.