Should petrol turbos run for a few minutes at the end of a journey to cool down?

I know you advocate to let diesel engines run for a few minutes at the end of a journey with turbos fitted. Will this also apply to petrol engines as there seem to be more of these about now?

Asked on 21 January 2017 by Basser

Answered by Honest John
Yes. Petrol turbos run hotter and are watercooled as well as cooled by oil flowing through the bearings, but the same applies.
Similar questions
What are the respective pros and cons of naturally aspirated and turbocharged petrol engines?
Who provides the most reliable turbo petrol engine and is it true that they need an oil change every 2500 miles? Would mostly short trips and occasional long trips suit a car with turbo?
Are all cars with turbos problematic? I keep reading about turbo failures which puts me off buying a new car with a turbo. Do you have to treat these turbo cars in special ways, particularly after a long...

Ask Honest John Right column

Value my car