Should I allow the turbo in my SEAT Leon to cool before switching off the engine?

Should I let my turbocharged SEAT Leon 1.2TSi's engine idle for a minute or so to allow it to cool so the oil doesn't carbonise due to the heat?

Asked on 16 June 2012 by AR, Darlington

Answered by Honest John
It has a water cooled turbo as well as oil cooling the bearing, but the answer is yes. After a long ascent, after towing and after a long run on the motorway, either idle it for 30-90 seconds or drive it at low revs through a town.
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