E46Fanatics - View Single Post - Help with unidentified coolant leak, [pics included]
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Old 11-25-2012, 02:08 AM   #6
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Join Date: Jul 2011
Location: Charlotte NC
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My Ride: 2001 BMW 330ci
Originally Posted by 05graysport View Post
Hard to see what that is from the picture. It looks like a pressure pocket that exploded right though.

Remember though, plastic expands with heat, so you may not be able to see the crack or hole that easily if there is one in the ET. Either way, that looks to be the culprit.

Probably going to have to do a full flush after adding bottled water, including the heater core removal of coolant.
That is a little drastic, considering that it leaked right out, and was never circulated.
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