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Old 04-16-2002, 12:19 AM
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blackmercedes blackmercedes is offline
Just a guy
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
One problem with overfilling (if overfilled enough) is that it can damage both crankshaft seals. The front seal isn't too bad, but a rear main seal ain't cheap to replace.

One of our dealers REALLY overfilled the crankcase on our C230, and it blew both seals. Replaced under warranty, but it was the last oil change not done by me.
John Shellenberg
1998 C230 "Black Betty" 240K

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