Sorry, at work. didn't get to finish what I was saying.
Again, not saying its bad just opinion based. Also he describes living in so cal but doesn't say it. We are in what's called an "extreme" area. That means due to traffic, short trip driving, hills, high temp, towing....We run a diffrent maintenance schedule. Most of our maintenance is twice what others have to do. He stated we are easier on engines. If he mentioned oil analysis at all, my response would be diffrent.
BTW, Wix Filters changed their design. If your running them now, don't. There's a bunch of reports with them internally collapsing and blocking all oil flow.
If you abuse your vehicles (I do) no one can tell you when to maintain. You need to have analyzation done. There's a ton of opinions, myths and rumors out there. If you want truth, you talk to the fluid manufacture. That means oil, coolant, brake fluid....
He did state "car manufactures need to sell cars". 100% correct. They don't want you to own anything older then three years. What that means is their maintenance schedules may be somewhat incorrect.
Sorry, there's a few things I'm very OCD about. This is one of them