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      03-31-2021, 05:43 PM   #4
SamyB
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Drives: BMW 335i 2008
Join Date: Mar 2021
Location: Miami

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Quote:
Originally Posted by e91Owner View Post
You probably also have coolant in the engine also. As for where it is coming from, leaks of that size generally come from something being cracked and given you have mixing of coolant and oil, there are only a few places where those come in close contact in the engine. The oil filter housing being one of them.

The oil cooler lines runs from the oil filter housing to the passenger side where the oil cooler heat exchanger is.

Thank you, I think the leaks actually come from the expansion tank. It was draining from there and dripping all the way down. Really weird because the block is super dry. I can't seem to find the leak. I'm going to change the oil filter gasket and see how it goes.

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