KenT,

The timing cover is basically the front cover of the engine. At the top front of the engine, there is a sort of half round shape cover, with a seal at the bottom of it. This seal is bad about leaking. Since it is approximately at valve cover height and at the front of the engine. The small leak dribbles oil down and back along the side of the engine next to the front two cylinders. Wash the engine at the carwash, and then glance at it every day until you see where the oil is coming from.

Good Luck,

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Larry Bible
'84 Euro 240D, 516K miles
'88 300E 5 Speed
Over 800,000 miles in
Mercedes automobiles