I started to notice drips of oil on my garage floor in the last few months and finally lifted the car to see where this leak is coming from. By looking under I cannot determine exactly where is the leak. By looking in the engine compartment down, there is nothing visible to tell me an oil leak. So where is this leak coming from? Rear main seal? Oil filter gasket? What are the typical oil leaks that would cause this?

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2003 E39 530iA Titanium Silver w/ Sport Package