Can anyone tell me what this is on the top of the engine?

10-29-2015, 01:13 PM	#1
psubmw Second Lieutenant 28 Rep 277 Posts Drives: 335i Join Date: Mar 2010 Location: Delaware iTrader: (2)	Can anyone tell me what this is on the top of the engine? What is this on the top of the engine? Is it part of the PCV system or something? Mine is oily as though it's been slowly leaking over time. I have a '11 335xi, so I have the N55 engine. Thanks for the help. Attached Images
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