How long do I need to drive at speed to get the DPF to regenerate?
I owned an Evoque that had issues with the DPF. But when a diesel flags up that the DPF needs a regen, how long time or distance wise do you have to get it on a motorway/dual carriageway before the fuel is dumped into the sump? Would it not be better for drivers to have a gauge so they can plan ahead for it?
Asked on 25 May 2019 by Colin
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Because the DPF is under the car, not 'close coupled' in the exhaust manifold, the car needs to be driven quite a long way (50 miles) at 2000 - 2500 rpm to get the DPF hot enough to promote a passive regeneration. An active regeneration will happen automatically, but if the DPF is too stuffed up with soot for this to work, the post-injected diesel intended to fire off an active regen will instead sink into the sump.
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