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Old 02-24-2010, 10:09 AM   #3
Biang
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Join Date: Apr 2008
Location: Chicago
Posts: 9
I live in the Chicago Area. I have been using Mobil 1 and the weight is what Porsche recommends (not sure). All Oil changes done at Porsche dealership. So I know they are doing it right. (or at least they better be for what they charge me.
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