Ok I just got a this info from my friend. He had it from an international forum. I am posting it here. This letter was the response Audi gave to a guy for writing to them. Hope this clarifies things.
"Dear Mr ******:
Thank you for contacting Audi Customer Care with your questions regarding the oil consumption in your S4.(which for me has been ZERO). As you requested, I am sendingyou this informationin writing.
All properly operating internal combustion engines use a certain amount of oil to lubricate the elements that separate the combustion chamber from the crankcase, as well as those areas which are exposed to the hot gasses and flame of the combustion process. This oil is burned by the engine and processed through the exhaust system and related controls. The rate at which your vehicle's engine will consume oil depends on the quality and viscosity of oil, the speed at which the engine is operated, the climate, road conditions,HOW THE VEHICLE WAS INITIALLY DRIVEN (my caps).Another factor is the amount of dilution within, and oxidation of, the lubricant.
Because of these variable, it is difficult to establish a standard rate of oil consumption. It is our belief that using up to one quart of oil per 1,000 miles of driving is within an acceptable range. As one would expect, oil consumption can go up or down depending on individual driving habits. If you have not already done so, you may consider having an oil consumption test performed by your dealer to find if you vehicle's consumption rate is within range. They will also be able to tell you of any conditions contributing to the rate of oil consumption(????).
Thank you for providing me with the opportunity to respond to your questions. Please know that we recognize the significance of your purchase, and naturally, your satisfaction is important to us.
Should you have any future questions, please contact your audi authorized dealer or call me through Audi customer Care at (800) 822-2834.
Sincerely, (SIGNATURE)
Elizabeth Withers Audi Customer Care Audi of America, Inc."
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