You really need to power wash the motor and determine where your leak is. With the air cleaner and turbo drains on the passenger side of the engine, those are well known leak areas. I think if it was your front seal, you'd see oil being blown down both side of the engine.

BTW - you'll hardly see ANYTHING from the top of the passenger side unless you take the air cleaner off.

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'95 E320 Wagon
'85 300TD "Puff The Magic Wagon" - SOLD
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