01-25-2013, 08:34 AM
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#11 (permalink)
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A True Z Fanatic
Join Date: Jan 2012
Location: Dallas/Ft.Worth
Posts: 3,349
Drives: Noisily.
Rep Power: 21
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Quote:
Originally Posted by Chuck33079
This. I know the turbos are oil and water cooled, but idling for a minute or so before you shut it down will make things last a lot longer. Just finish listening to the song on the radio before you turn it off.
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Yeah, 'cause once the engine stops, the flow of oil stops (I'm pretty sure water cooled turbos are a thing of the past).
If you roar into your driveway and kill the engine, the turbos could be spinning at 20000+ RPM when that flow of oil stops, meaning your bearings can go basically dry before the turbine stops spinning, and the little bit of oil left in them will cook off, causing damage over the long term.
Edit: Hell, for that matter, I like to give the engine itself time to cool down before I kill it in my N/A setup. The heads in our cars generate a lot of heat when driving and giving it some time to cool down at idle (the oil helps take heat from the valve train) doesn't hurt at all.
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