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Old 02-09-2009, 01:52 PM
Ferdman Ferdman is offline
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Join Date: Aug 2002
Location: Southeastern PA
Posts: 3,077
Tim, good idea to replace the oil pressure sending unit. At 145,000 miles it would be surprising if the oil pump needs replacing. Mineral oil was/is fine for that vintage MB engine. It's more a matter of routine oil changes to prolong engine life.
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