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Now that i spent a little time trying to get a better understanding of what the oil numbers really mean , i guess that 5w-40 would be the oil to use year round . the thin 5w for cold start and the thick 40 for normal operating temps. the only thing i question is in january the temps here can stay down below freezing for some time. In those temps does the oil really make it to the "normal" operating temp ?
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