Thread: Coolant
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Old 11-28-2012, 06:14 PM   #4
WDE46
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Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 8,952
My Ride: 2004 330Ci OBM
You may need a new radiator, but it could be the expansion tank bracket, especially if you have an automatic. The transmission cooler connects to that part and sucks off some coolant. Mine is leaking slightly (like 2 drops per day).
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