Quote:
Originally Posted by maticCRO
My friend is a mechanical engineer who was excelent on his university,especially in fluid dynamics and thermodynamics, was on Formula student team Croatia, now works 6y for BMW Munchen and has his own smaller team, once told me:
"Never turn off the car that has a TURBOCHAGER Immediately after you have been driving it hard(high rpms, launches and spirited driving) ALWAYS let it cool down for 3-5min and your turbocharher will be forever gratefull
I listen to his advice everytime i drive my cars faster
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Quote:
Originally Posted by Mech Spec
Well, your friend is dead wrong, despite their credentials.
The car has an automated cooling program for the turbo(s) and runs the cooling loop and the radiator fan until the turbocharger has sufficiently cooled after the car is off, no matter how hot you got it.
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Actually his friend is absolutely correct.
Engine off water cooled correct, oil pressure zero.
Turbos be fast coming down from full boost, even loafing home maybe 50,000 rpm. Do you want your turbos spinning that fast without oil pressure?
Water cooling is there to prevent oil coking.