I think it's a test for popular "performance oils".
I'd also like to see results for Liquid Moly, Eneos and some other brands.
The heat was worrying me, but... think about it... a lot of the metal on metal wear and tear inside the engine occurs during cold starts.
While the effects of additives are dubious because they break down under heat, most of these commercial oils should be stable at heat... they're designed not to thin out at high temps... so cold-starts should give a good idea of how they perform throughout their heat range.
Still, I'd like to see a retest of those synths and fully-synths that had backwards results at full operating temps... as I think it's just the thicker cold rating viscosity that's making the semi-synths outperform their expensive cousins.



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