I was changing my oil yesterday and noticed a significant amount of oil residue on a bracket located approximately at the center of the front axle, to the left of the oil pan. I’m confident the leak isn’t coming from the oil pan, drain plug, or oil filter, based solely on the location of the buildup, but I was not able to see specifically where the build originated. As this is a Boxer engine, my concern is that the underside of one of the head gaskets may be leaking. My only reservation about this theory, however, is that I haven’t smelled any burning oil or witnessed any grey smoke.
Unfortunately, I haven’t paid close attention to the oil levels in recent moths, so I can’t say definitively whether or not the levels have fallen since the last oil change.
Can anyone lend some insight as to where the residue is coming from and if it’s a problem requiring immediate attention?