Firstly, all additive packages are proprietary, and they ARE using additives, some conventional, and some newly developed ashless (non-metallic) additives. It's the additive package that "enhances" the base oil for the total package.
They have blended various PAO viscosity (mainly 4, 40, and 100 cST) base oils, together with internally developed esters, and proprietary additive packages, to make the SuperSyn. Using a high shear stable base oil, one needs only about 1.5% to 3% VII to extend the VI range, as compared to about 7% to 10% for other oils, especially the "conventional" oils.
In my view, the SuperSyn is the whole schmear; a technology "set."
For example, the Tri-Syn technology "set" was based upon on a couple of PAO viscosities and TMP and cocoanut oil esters with the proper additives, which proved rather expensive.
[ September 15, 2003, 08:28 PM: Message edited by: MolaKule ]