Thread: 2007 650i Engine Coolant Leaking?
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Old 02-04-2013, 11:58 AM
andrewpk andrewpk is offline
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Join Date: Jun 2010
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Mein Auto: 2005 645 Ci
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Check for leaks around your coolant expansion tank. That's typically the must likely source.

I just replaced mine over the weekend. It finally sprung a real leak after dripping slowly for a month.
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