MSDS from Mobil.com. This is from the Japan site and the most recent MSDS is from June of 2012. Based on the MRV #'s, and high temperature ability of the AFE oil, I am not surprised it's 50% PAO, the rest Grp III+. *You can find Toyota "Castle SN 0w20", which may be TGMO in Japan? That MSDS says it's mostly Group III.
Hazardous Substance(s) or Complex Substance(s) required for disclosure Name CAS# Concentration* GHS Hazard Codes 1-DECENE, HOMOPOLYMER HYDROGENATED 68037-01-4 40 - 50% H304 SEVERELY HYDROTREATED HEAVY PARAFFINIC DISTILLATE 64742-54-7 30 - 40% H304 SOLVENT DEWAXED HEAVY PARAFFINIC DISTILLATE 64742-65-0 1 - 5% H304