Regeneration game

How can I tell when my diesel particulate filter needs its 'automatic regeneration process' "supporting"? I don't wish to unnecessarily drive in lower gears and raise my fuel consumption. I typically drive my Fiesta 1.6 diesel Zetec 175 miles each week, six journeys being in excess of 20 miles using dual carriageways.

Asked on 21 August 2010 by CP, Ramsgate

Answered by Honest John
Given this sort of use, you probably don't need to worry at all. If the car has an instant consumption meter, a sustained drop of 5mpg or
so will indicate that the DPF is regenerating. But if you stop, get out and smell burning, then the DPF is regenerating and it will probably be as well to restart the engine and let it complete its cycle before switching off.
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