Lol, neither am i but i did sleep at a Holiday-Inn last night.
There are 5 kinds of base oils: Group I, Group II, Group III, Group IV and Group V.
When folks mention "PAO", they are referring to Group IV base oils. The 1-Decene' you see in the first line of the MSDS is that, PAO. For quite a few traditionalist, this is what's considered "truly synthetic". What most north american "Full Synthetics" use is a combination of various base oils, with the predominant ingredient being Group III, or extremely refined (hydrotreated, hydrocracked) crude oil. In all honesty, Group III base oils have been refined and improved so much that the performance difference is very small for the average consumer.
One unofficial Group is Group III+. This is what many assign to Gas-to-liquid or GTL based motor oils. The most famous of which being Pennzoil Platinum with "Pure Plus"(GTL) technology. Although others us it too.
Here's a good, easy read...
Almost every lubricant used in plants today started off as just a base oil. The American Petroleum Institute (API) has categorized base oils into five categories (API 1509, Appendix E). The …