Quote:
Originally Posted by NateHale88
The turbo is water cooled and pressure lubricated by engine oil which also provides cooling, making it both water and oil cooled. The car must have some sensor that when I drive it hard and really get into the boost it will power the cooling fans after it is turned off, for about 5 minutes.
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Some cars, turbo or not, have this fan run on feature if the car is parked with the coolant over X degrees. The idea is to avoid heat soak, not to save a hot turbo being shut down. If coolant/oil are not circulating, it's not cooling your turbo or engine for that matter.