I remember reading a thread recently where someone posted info on diesel particulate filters.
If I remember correctly it went along the lines of the filter collects the particles and they get "burned off" during a long run.
My mate has been told this filter is throwing a cel light on his 3.0 diesel A8.
Can a good run at high revs clean the filter, and if so what constitutes a good run in terms of time and rev range?
Also, having a diesel as my family car should I be taking it for some canage on a regular basis to keep the filter in good nic?
Any advice welcome guys (and gals)