Certainly. Passenger side, front of head, right below the edge of the head you will be able to put a spot light at night and probably see oil residue, or during the day for that matter on most.
This is considered the "known factory leak" and is annoying. Cleaning your engine with purple power or other degreaser will help locate the leak. I don't know how many miles you have on the engine but chances are that it's leaking from the factory leak. Spray starter fluid in the area to clean and dry the area, run your engine and you will probably find it. I have stopped the leak in many mercedes with the method I described in my earlier post.
Hope you locate the leak soon.
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'87 300E | 2.6 engine
Artic White - Navy blue interior, chrome rims, very clean and sharp!
91 300E
89 300E
The rest of my collection are just cars and trucks...no more "automobiles"...