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      04-05-2013, 11:35 AM   #4
Manny G
The Illustrious
United_States
24
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104
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Drives: 2003 540i/6 M-Sport, 2013 M5
Join Date: Apr 2013
Location: Coral Springs, FL

iTrader: (1)

The coolant reservoir is known to have leaks at the plastic seam welds also. If its not the radiator, its the reservoir. If it's neither, then you may be leaking coolant into the oil... check for white smoke from the exhaust or have a shop do an oil test for coolant contaminants