On the oil filter housing, about 3/4 of the way down, the oil filter housing stays wet with oil which collects dirt. I don't lose much oil, no drips on the ground. I thought the oil cooler lines might be in need of replacing, but at the oil cooler they are dry. At the oil filter housing, the wetness starts well above and around from the lines.

Are there gaskets or something in the oil filter housing that need to be replaced periodically, ie rebuild the housing?

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1981 240D, Auto Trans, 160k miles -- CRASHED!