that don't contain Group III oil? Every "fully synthetic" SDS I've looked at contains a significant amount of what I presume to be Group III oil. For instance, the SDS for Mobil 1 ESP 0W30 has as its main component "DISTILLATES, HEAVY, C18-50 - BRANCHED, CYCLIC AND LINEAR." My presumption, and I may be wrong, is that these are distillates obtained from petroleum and are thus Group III. The same oil has up to 10% "1-DECENE, HOMOPOLYMER HYDROGENATED" which is a PAO.
Thoughts?
Thoughts?