Quote:
Originally Posted by Dzmitry
To make myself more clear, though I was mostly joking, it does make a difference. 0W-20 will have a lower viscosity than a 0W-40 oil at startup. In the case of 0W-16 vs 0W-20, the difference is probably quite insignificant to care about, which is why I intended it to be a joke.
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To be sure, viscosity classifications refer to ranges so there are thin 0Ws and thicker 0Ws. Out of curiosity, do you have any empirical data to support this statement?