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That simmering feeling
I take your advice about allowing turbo diesels to 'simmer' before turning off. But for how long after what kind of driving? Also if it is an important but uncertain area, could a dash warning light be introduced to let drivers know when it is 'safe' to switch off?
Asked on 13 February 2010 by G.C., Hindhead
Answered by
Honest John
1 - 2 minutes when stopping to refuel on the motorway, 2 - 3 minutes after a long ascent, 2 - 3 minutes after towing, but if the end of your journey involves negotiating a town at low engine revs, that, itself, will do the job. Yes, I guess a temperature sensor could be located close to the turbo to warn you when it was still red hot.
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