I am curious if anyone out there has any opinions on the specific ingredients of synthetic oils, Mobil One, Edge, etc? I wonder if there is anything special about their additives, specifically the modifiers, oil protectors, and surface protectors? It’s hard to know what to base a purchase on, when I can’t tell if any of the specific ingredients truly matter. Also, is it important how the oil is made, beyond just the specific ingredients used? Do the so-called “proprietary formulations” really matter in any of these synthetic oils?