A friend has a new to him '04 C320 4matic with 47000 on it and since his purchase he has added 5 quarts of oil in only 4000 miles, each time the computer has prompted with a 1 quart low oil level status. The dealer and MB-USA each say that oil usage of 1 quart every 650 miles is "normal". Has anyone else experienced this as well. He is naturally concerned about long term oil usage and engine problems. Also does anyone know the exact part # or where to get a C320 dipstick for manual level checking? Thanks

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1980 FERRARI 308 GTSi
2002 MERCEDES BENZ C32 AMG
2004 TRIUMPH BONNEVILLE BLACK - CAFE RACER