Quote:
Originally posted by dpbrowne
Canged the air filter on my 83 300SD (260,000 miles) and noticed that part of the filter was covered in oil and the housing was very messy with oil. I did not notice this porblem a few months ago when I changed the filter. Wat causes the oil buildup and how much shopuld be expected.
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Check to see if the BREATHER HOSES & TURBO OIL RETURN PIPE are plugged . . .
NOT UNCOMMON with that many miles . . .