Quote:
Originally Posted by LSA
Based on the EE video, I think this is incorrect. I think the cold “W” number is sub freezing.
It’s an SAE standard, so it should not be that hard to find. I’ll look up the SAE paper later when I have time.
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Do look that up. I'd be curious what the horse's mouth has to say (the SAE). I didn't run across it quickly. However, again I encourage people to look at the actual data sheets for the various oils. Look at the viscosities at 40C (104F), and then consider that this represents a cold start in even the warmest of climates. Again, there is a meaningful difference in oil flow, even when the ambient temp is 104F: 0w-XX oil simply flows better. IOW, 0w-XX oil improves cold-start protection in cold or warm climates.