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Old 01-12-2018, 05:11 AM   #12
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Join Date: Dec 2016
Location: Clifton, NJ
Posts: 804
amazing this has to be raised given the seemingly decent technical knowledge here, but a 5w-40 and a 0w-40 are the same weight when the car is at operating temperature (setting aside slight cst differences between brands).

The number before the w is the COLD viscosity.
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