Quote:
Originally Posted by Tuner1
This information is misleading. Depending on which 0W-30 and 0W-40 is compared there can be a large difference in the viscosity at operating temperature.
SAE 30 is between 9.3 - 12.4 cSt @ 100C
SAE 40 is between 12.5 - 16.2 cSt @ 100C
I would be willing to be that most LL-01FE approved oils are well below 12.4 cSt @ 100C.
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While that CAN be true, that’s a theoretical. 100C is below the operating oil temp of most petrol engines.
And SAE 30 and SAE 40 are basically irrelevant. They aren’t multi viscosity oils and aren’t approved or really used for practical street purposes. Race, sure, but that’s not what we do.
By all means, please illustrate. Although I will accept that most LL-01FE oils are below 12.4 cST at operating temperature. But feel free. My point is that arguments about this are not really relevant. 0w-30’s and 0W-40’s just aren’t that much different in real usage. They are different but not that much.
Shawn