I am a ML320 2001 owner. I have had my oil changed and questioned the same thing. Yet the car manual confirms the 8 quart capacity.
You may want to go to Wal-Mart next time though. It cost approx. $30 for a change but you first have to stop by a auto parts store to get the necessary filter for an additional $10 about.
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Saturday, April 8th, 2006 AT 10:56 PM