| so much as it's more about film strength and of course the internal chemistry of the oils. 0w is not recommended for turbocharged engines. and taken from the fsm: "for turbocharger engines, 5w-30 should be used only under extremely cold conditions." if it was for a n/a, i would not mind running 0w30 as it would not see the high heat from the turbos. i run 0w30 in my truck.
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