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Those number are not up to date for one, that data is not the whole story, and does not cover new formulations on M1 or their 2 offerings of synthetic. I have neighbors in auto and synthetic racing oil sales that know amsoil, what they use is mobil 1 in their car. I have seen bearing lock tests at my home from my friend, of all oils and Royal purple won, but this guy says Mobil one is still overall better and sold Royal Purple. Racing is different. A most superior oil is Mobil
1, 0-30. Im not at all sying Amsoil is bad or inferior but these folks sell it and own cars I dream about, their hobby and life is cars, one is Chicagos auto columnist. I guess I would use Amsiol also if I was establised as using it but I am switching to 0-30 M1, I just bought a few cases for cars.