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      02-26-2014, 04:18 PM   #10
wmandra
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Drives: 2010 328i, 2014 Z4
Join Date: Jan 2010
Location: NJ, USA

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oil temps have been rock solid on mine, even when pushing hard on the track. 2 days at watkins glen and temps never went above 250F. I've actually considered installing the auxiliary radiator that comes on the N20 in the X3, but held off. I may log water temps when I go to Limerock next month and see what they look like. I think there may be something to what you were saying about better cooling in the engine bay, the Z4 bay is significantly larger than the 3-series.
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2014 Glacier Silver Z4 28i M Sport - See the build thread: http://e89.zpost.com/forums/showthread.php?t=950367