I have written about this before. Back in the 70's and 80's Wynns was the oil treatment that was pushed hard in the trade and they had the same bearing load test where they would take some oil from the garge and use it in the tester, increasing pressure until the roller seized, then add Wynns and the roller would lke magic free! However all it was doing was raising the pressure seizure point, which you could do by adding HypoyEP oil.
Anyone fancy putting Hypoy in their VVT turbo'd modern engine?