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11-19-2012, 03:12 AM
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#3
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Brigadier General 
Drives: 2009 335i M Sport Sedan 6MT
Join Date: Aug 2008
Location: Bucharest, Romania
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Castrol is generally thicker than Mobil One at the same rating. However, in my country 5w-40 is advertised for diesel models only. Not sure why. I would use 0w-40, looks better on all counts for a winter oil.
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