I like the car care nut, however THIS video and his other video where he talks about how 10,000 mile oil changes ruined a car, kind of contradict themselves.
The extended oil interval “failure”, THAT car lasted 200,000 before (if i remember) it became an oil burner because of stuck rings. And needed replacement. He blamed the long intervals, however that particular engine was known for a design flaw (rings). He blamed the interval, if I remember.
And now THIS engine failed and became an oil burner, a severe oil burner at 300,000 miles, however when did that consumption start? In the video it sounded like something the customer was dealing with for a long long while. Did the consumption start at 200,000 miles? Then grow and grow until it became unmanageable? Sounds like it did. Either way, we have two oil burners here - one with 5,000 mile intervals, the other with 10,000 mile intervals - the results were the same. Engine failure.
Oil brand, interval (within reason) isn’t going to save an engine that has design flaws/known failure issues.