Great information. I have read it several times and don't pretend to understand it all. But based on what you have written, no additives or lubes used today really change the outcome of that report from 1942. Higher viscosity generally leads to higher heat, higher heat leads to...
I have a WW2 jeep, 1942 Ford GPW. Recently I edited together a book based on articles from Army Motors. An Army magazine for mechanics and drivers of WW2. It was the precursor of PS magazine that is still being produced today.
One of the articles, "Sore as a Boil About Oil", August...