Hey guys, need to back track for a minute. I stated in the original post that the head was leaking oil from the front passenger corner....like right at the corner where the front timing cover meets the head. Anyways after searching online here and speaking to a few friends, everyone seems to think it is actually the timing cover and I need to double check that. I looked at a post on the forum from S Class Guru and he recently did a m103 in November I believe, and stated that the rear passenger side of the m103 is the area where an external oil leak head gasket failure is likely to occur and that there weren't even any oil jackets near the front cylinder one to cause an external oil leak from HG failure. I pulled my plugs today and all are bone dry with no signs of oil, so I'm assuming even the valve stem seals are still good. I just replaced that timing cover gasket last month, but I have several of those and valve cover gaskets as well because those parts are likely to develop leaks and they are so inexpensive. I guess what I need to know is that, is it likely that there is an external oil leak from the HG in the location I mentioned or is it most likely the timing cover gasket? Also, can anyone confirm that there is no oil passages/jackets near the front passenger piston #1. Thanks guys.

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1990 190E 3.0L