It's a mixture, and I suppose results vary as the formulation changes over the years.
My experiences are not with Warren/TSC oil, though.
I have heard mostly good things, as long as the specs are carefully looked at. I know big Deeres with wet brakes can be pretty sensitive about brake chatter if Deere oil isn't used. It's honestly been too long.
"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."