I think choosing an engine oil is really complicated and there is no one oil that's the best for every engine, every usage scenario, every environment, or every intended oil change interval. That's why I, for example, run three completely different oils in my three vehicles. 0w-30 AMSOIL SS in the Vic, the Escape gets whatever synthetic 5w-20 or 5w-30 I have floating around, the the ole Chevy currently has Delo 10w-30 in it but I'll probably try Castrol 0w-40 next time.