Back when Ford started really pushing full synthetic oil they had us all take classes to learn all about the oil. The classes were about what you would expect, pure propaganda. At the end when they asked if anyone had any questions I raised my hand and asked "Is Motorcraft full synthetic a Group 3 or PAO and is it hydrocracked?" The presenter went from smiling to a real stern angry look and said "get out". I kept sitting there and said "I expect an answer" which then they dismissed everyone.