Respectfully, show that Amsoil uses a different grade/better/superior version of additives than the same zinc, phosphorus, boron, moly, magnesium etc. that Warren distribution (Super Tech) or any number of other oils employ. I am not able to find the discussion however I recall it was fairly evident most if not all oil manufacturers regardless of the name on the bottle get them from a very short list of suppliers if not the same supplier.
Definitely don’t want to start an issue here, however every statement made with respect to this boutique oil doesn’t have a direct answer in the sense that it clears up any ambiguity with respect to being superior other than the marketing approach. I don’t believe oil analysis shows anything superior (or inferior) with respect to real world results.
Very happy to continue discussion and learn more about the performance edge Amsoil has with respect to a supplier that sells superior additives relative to another supplier.
In general I see very little, if anything at all, about where additives come from. It is my understanding the base oil is where the battle is fought when it comes to a superior used oil analysis and no mention is made of where the zinc, phosphorus etc. comes from. That being the case, that would say the additives most likely come from the same place for most oils.