Interesting reading, certainly seems like they put a lot of thought into it.
I recorded over 200 trips on my 2017 Discovery Sport to find out if its DPF is fit for purpose
- Thread starter SootScout
- Start date
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You probably cant tell about the amount of short runs. But yes I think as long as it isnt blocked beyond help then it could be cleaned with its own system and proper use, and work fine.
J
So if you apply what you have just read/learnt.
What would you think about the graphs in the OPs posts.
J
The ash level in the DPF is the canary - high ash content = lots of active regens and potentially cheap or incorrect engine oil used. I've seen DPF's that are >12 years old still performing as intended, some manufacturers fitted them way ahead of the mandatory date.
Ash is cumulative and cannot be reduced, it's 'measured' by a calculation involving a few factors, but mainly active regen time, DPF age and (for some mfr's) oil grade used.
If a DPF vehicle is 'used within the design parameters' then yes, you will be able to reverse the DPF soot load issues, what you should also look at is the inlet & charge air tracts beyond the EGR inlet(s), these will likely be choked with oily soot which will need removal - it won't self clear with sustained high temperature runs, just 'bake' in place, but once cleared, it will stay that way when 'used as intended'.
VW Tiguan low pressure EGR valve filter blocked due to low usage:-
Ash is cumulative and cannot be reduced, it's 'measured' by a calculation involving a few factors, but mainly active regen time, DPF age and (for some mfr's) oil grade used.
If a DPF vehicle is 'used within the design parameters' then yes, you will be able to reverse the DPF soot load issues, what you should also look at is the inlet & charge air tracts beyond the EGR inlet(s), these will likely be choked with oily soot which will need removal - it won't self clear with sustained high temperature runs, just 'bake' in place, but once cleared, it will stay that way when 'used as intended'.
VW Tiguan low pressure EGR valve filter blocked due to low usage:-
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