This goes back to looking at Amsoil's additive package. If you look at any of there oils, they have a very weak additive package. Hardly any boron, calcium and no moly. They do have a decent amount of ZDDP. So how do they acheive good wear numbers? Is it in the base stock blend? There has to be something else or some other approach to their formulations IMO.
quote:Amsoil has told me that the majority of everything does show up in a virgin sample, but a it is possible that a few things don't. [ January 21, 2004, 08:00 PM: Message edited by: buster ]
Amsoil uses oil soluble types of FM's .... Most of these compounds DON'T show up on oil analysis, as they are part of the basestock blend. These "might" include such compounds as organic fatty acids, amides, high molecular weight organic phosphorus and phosphoric acid esters.