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zakh, check the Oil Viscosity vs. Ambient Temperature Chart in your Owner's Manual to help you decide what multi-viscosity oil to use. I would recommend using Mobil 1 (a synthetic oil) which is factory-fill for all new MB automobiles. Mobil 1 15W50 pours at -49 degrees F ... that should be fine for your Cosworth engine. Per the label Mobil recommends that weight for turbocharged and supercharged engines.
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Fred Hoelzle
Last edited by Ferdman; 11-07-2006 at 07:08 AM.
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