Would you get it fixed?
My 2017 f350 seems to be running fine but it is only doing a dpf regeneration about every 800 km.... and I'm not even sure it is doing it then. My dpf % full screen has been staying at 0% for over 200...
Forum Discussion
naturist wrote:
DEF has nothing whatever to do with the DPF and the need or frequency of regenerations.
...............
That’s not quite accurate. There is an indirect relationship between DEF usage and DPF regen frequency. The pre-DEF Diesels that had DPF’s used a lot more EGR to cool the combustion temperatures, and control oxides of nitrogen. The downside to cooling the combustion temperatures is............more particulates for the DPF to catch. By using DEF as the primary means to control oxides of nitrogen, less EGR is needed, the combustion temperature can be maintained higher, fewer particulates are produced, and fewer regens are needed.
I owned one of those pre-DEF diesel trucks, and the most it ever went between regens was about 200 miles. Most of the time it was less than that, and sometimes a lot less. Like every 75 miles or so. My current truck’s miles between regens has slowly climbed since new to over 400 miles between regens. In fact it just recently went 500 miles between regens for the first time that I’m aware of, and started to regen even though the soot load was about 85%.
:):)
