Oh boy. An oil thread. Always a gold mine to see how much of a stickler some people are for things.
I don't have much to add other than a few things I remember from selling oil 15 years ago and diving into this hell hole of theoretical discussions and dealing with Geekgeneers on Bobistheoilguy
1) There are only 6 or so manufacturers of true synthetic oils. Mobil, Redline, Amsoil and a few others.
2) Everybody else who calls their oil "synthetic" is dino oil that has an additive package that makes it work as good as synthetic but it's not a true synthetic.
3) Which means that every non true synthetic oil "blend" is just regular dino oil with a "medium" additive package compared to their "synthetic" additive package and that just seems ... wierd to me. Might as well go for the high end package if you're going with a non true synthetic.
I used to be quite a stickler and care for oil pickings and use Amsoil on my bikes. A lot of time has passed and now I just use Mobil1 and change it infrequently and certainly at longer intervals, sometimes same oil sits for years (I assume dangers are moisture content for long sitting oils).
I send my oils to Blackstone and usually get a scary feedback everytime. Clearly something is a problem but I doubt it's the oil.
Life is too short to overthink oils for a marginal theoretical gain for regular pedestrian cars and engines. Engines are pretty tolerant. Although high end exotic cars, bikes that rev to 16k or race cars could see the benefit from that marginal gain.