How should I drive my Citroen C5 diesel in order to avoid potential DPF problems?

A couple of months ago, I bought a secondhand 2007 Citroen C5 2.0 HDi auto. This is obviously a rep's car, given the 72,000 miles on the clock. Again, no problem, as this is good, honest mileage and the car runs beautifully. I'm a stranger to diesels but, having been a petrol Citroen driver for 30 years, I thought the transition would be fairly painless. Indeed it has, but I've been noticing a lot of comment about DPFs and low/slow mileage and this is causing me some concern. I'm now stuck with a driving style that is basically that, with occasional faster runs. Is there any regime I could follow that would minimise the deleterious effects?

Asked on 5 September 2010 by The Wrinkly Ninja

Answered by Honest John
Don't repeatedly start it from cold and take it for short runs. If you do this twice in a row, take it for a clear run of at least 20 miles where you can use more than 2000rpm. The DPF in this car could be close to the end of its life anyway. Or its tank may need topping up with Eolys fluid.
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