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One thing I'm not clear about***********: under normal operating conditions and at operating temperature, the oil temp should be the same regardless of the ambient temperature (if it does, the cooling system is at fault). So what's the difference between a 30-weight at 10 and 100 degrees Fahrenheit?
also, isn't 0w-X inherently better in any climate than 10w-X because of the reduction in thickness at sub-operating temps
btw, I don't know what those asterisks are doing there
Last edited by advertisehere; 01-17-2010 at 04:13 PM.
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