Poorly qualified, if one looks strictly to school credentials (BA and JD, neither of which had anything at all to do with oil, though I did discuss oil and gas law with a prof once before I judiciously elected not to take his elective...).
I've been a car nut, of varying degrees of involvement, since the early 70s, when I started out actually believing that the shiny black stuff inside the valve cover of the Slant-6 in my Mom's 73 Dart was some sort of "grease" that actually belonged there!
Ahhh, the ignorance of youth...
I became aware of oil analysis when I was flying in the Marines (active duty flight status from 83-91). Originally, the program was NOAP (Naval Oil Analysis Program) and some time a number of years back got consolidated into the JOAP (Joint OAP). I remember discussing NOAP reports with our powerplants guys during the stint I served as my squadron's Quality Assurance Officer. I really don't recall any of the particulars for jet engines, except that we sampled from our engines regularly, and every once in a while, we'd have to unexpectedly yank an engine out when the results weren't right.
I didn't really get back into oil analysis until I discovered this site, though I've been a "closet tribologist" for years (all self study, journals, articles, mostly on the internet). I will readily offer my opinions here, but I do try to make clear that if someone has a hard case, they need to talk with a properly qualified pro like Terry.
Welcome, and enjoy the site.