AO Silver Member
Join Date: Nov 2010
Location: United Kingdom
County: West Yorkshire
while it wont do any harm letting it run on to cool its not essential, its not a high performace racer.
diesels exhaust temp isnt anywhere near as high as the petrol engined turbos.
the best thing to do to ensure longevity of your turbo is simply to look after your oil and change it regular thick gloopy oil finds it hard to reach the journal bearings, this can lead to them running dry and they are phospher bronze which soon wears