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X3 F25 (2011 - current)
The latest X3 brings some added style and some new features to the BMW SUV family. Talk about the new F25 now!

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  #1  
Old 11-02-2011, 01:06 PM
Norm50 Norm50 is online now
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Location: Alberta
 
Join Date: Nov 2011
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Mein Auto: X3
X3 35i Turbo Cool Down

I'm going to be ordering my first BMW this week, a X3 35i. I was wondering if any of you know what technology BMW employs to cool the turbo bearings down after engine shutoff.

I know that when turbos were first introduced in vehicles, "coking" was a problem as the turbo bearings would be so hot when the engine was shut down that the sudden lack of oil flow caused oil on the bearings to burn and leave a residue on them. This cause premature turbo failure.

Just wondering what BMW does to prevent this.
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  #2  
Old 11-02-2011, 02:40 PM
Want the Thrill Want the Thrill is online now
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Location: Michigan
 
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Mein Auto: 2011 X3 35i
This was discussed a little bit on the other forum:

http://x3.xbimmers.com/forums/showth...ght=turbo+cool

May help answer your question.
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