[Logic]

Originally Posted by aerohead

I wouldn't !
I've never, ever, suffered a camshaft / tappet valvetrain failure in over 57-years of driving, so 'I' would have no 'need', necessary to 'motivate' me to do anything.
Camshaft / tappet valvetrain failure in race cars was the motivating factor in the search for anti-wear / extreme-pressure additives.
Specifically in 'drafting' situations of NASCAR and FORMULA-I, where the trailing vehicle's radiator was occulted from the airstream, the engines overheated, and the oil thinned below it's critical viscosity, causing actual contact between moving parts.
If you want to add some additional context to your hypothetical rabbit hole I'll be happy to participate, 'AFTER' you've addressed my 'wall of text'.
And consider a one-hour minimum, at $270/hour, a fair compensation for my time.
You need to learn something about 'costs' and 'prices' for specialized information.
Tribologists are currently paid an average $ 171,428- year salary, up to $ 237,765 / year, and they're 'provided a laboratory and equipment free of charge.
Please be mindful of this when you contact Dr. Erdemir.

What?

The Question:
Imagine before ZDDP was added to engine oils:

How do YOU get it into engine oils WITHOUT being allowed to lab test or field test???


IF
You cant read
THEN
HowTH can anyone trust ANYTHING you say!???