E46Fanatics - View Single Post - **The E46 common oil/coolant/fluid leaks w/ pics and part numbers thread**
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Old 10-28-2011, 11:18 AM   #18
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Originally Posted by 330ciandr6 View Post
7. Rear main seal
Usually on higher mileage cars as well. It leaks between where the transmission mounts to the engine. This is not an e46 but is what it looks like when a rear main seal leaks.

This kind of picture not necessarily means rear main seal, it might be a leaking oil pan gasket too. Ask me how I know. Leaking rear main seal is pretty rare on M54s. Thus, if you see oil drops at the back of the engine - do not panic, it most likely an oil pan gasket and not rear main seal.
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