This should get interesting. Frankly I have been using 0-20 for several years now and both engines show no outward sign of engine wear. I even used M1 5-20 in the 70s in engines calling fo 10-40 with very good results.
As discussed before, I'll follow that list when I want my Timken machine to not wear out...engines...:meh:
This Engine Test Guide uses a lot of motored valvetrains, a more realistic oil test. They say:
"Tests can be conducted in any or all of the following:
==== Special test stands to simulate the component environment
==== Motored cylinder heads or engines
==== Firing engines, with and without dynamometer loading
==== Vehicles on test tracks or on chassis dynamometers"
Engineers use pin-on-disk as a quick way of showing they have good mixed boundary performance or not. The pin on disc test has proved useful in providing a simple wear and friction test for low friction coatings such as diamond-like carbon coatings on the valve train. It DOES have validity. Yet it doesn't always work since various components might surf on the oil film differently.
This junk gets posted at least monthly by some new member who thinks they've found something special,when in reality the only thing special here is how little this stupid test represents a running engine.