You don't need a PHD or even an engineering degree, although neither hurt.Unless u have a Phd in chemical engineering, practical experience is the next best thing
The information is out there on alot of this stuff. You just have to sift through alot of crap and misinformation to find it.
With that said most of this oil stuff amounts to pole vaulting over mouse turds. Its just doesn't matter that much as long as you use the correct type of oil.