Is it normal for a 2003 c230 to use oil. My computer tells me to add 1qt of oil to reach maximum level. No leaks, car is drivin short distances, very little highway driving. My car has 9000 mile since the last oil change. It was full then. If its normal where is the oil going. I have a difficult time believing that a mercedes with 53000 should use any oil.

You should probably not start different threads for the same topic. Then people don't know where to respond. As far as your question, 1 quart in 9000 miles is not typical for most cars. Most cars use a lot more than that. I am guessing you do not have much experience with cars to ask such a question, if I understand you that you think this is high consumption. Most car manufacturers consider a quart every 1000 miles to be acceptable. The M111 engine is a bit odd in that it uses very little oil. Also, if you don't have a dip stick and rely on the "computer" it is a little hard to know how much you have really used, unless you know exactly how much you had in the first place. But even if it used a full quart, that is very little for 9000 miles.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

9K+ miles between oil changes is not acceptable for your car. You should be changing it at about 5K miles.

-GH

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For Now:
1992 Mercedes Benz 500SL
1998 BMW 528i
2003 Honda Element
2002 CBR600F4i
1977 Coachmen Motor Home

Please explain the basis for your statement. Or is this just your opinion? You seem to state it as a fact.

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1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

Like I stated in your other thread, 1 qt. per 9000 miles really is nothing to worry about.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280