I am happy to see someone interested in fuel components, this mean that diesels are well alive and that their future will not be that of running wheel chairs!
Let me remember that :

a) ball bearings require the LESS viscosity the HIGHER the rpm
b) plain bearings NEVER run in axis
c) the required viscosity for both systems, strange it may seem, are very similar at high rpm
d) variable loads require slightly higher viscosity
e) four strokes requirements may differ strongly from two strokes
Now the 1 billion $ ask. WHO KNOWS WHAT ARE THE OVERALL REQUIREMENTS for model engines running between 10K and 20k rpm?
And, what are the requirements for the liner? and what those for the rod big end? and for the small one? I guess those copying and selling diesel mixes do not know them.... but this is not "intellectual property" and no lawyer will give you the advice of not disclosing what you think....who has hears will hear....
VEGETABLE OILS CAN MET ALL THESE REQUIREMENTS, and we here can see some interesting experiences. As soon as a definitive word will emerge I will post them in the fuel thread.
FOR NOW I AM DEFINITELY ADVICATING THE DEVELOPEMENT OF VEGETABLE OILS, AND MORE OF THEIR MIXES, AS SOMEONE IN THIS THREAD IS ALREADY MAKING.
When "CLASSICAL" mixes were conceived none could think to cases as throttling, and four strokes conversions. Now it is time to consider these cases as relevant, and mixes must respond to these new needs.
Now I am working on documenting and testing. Flying or bench experiences as those of Andy, Stewart, Sloper and others may help .
I think we have and can reach a sort of consensus over a definitive word.
My point of view is evermore that a mix of different vegetables will be the last word, each of them assuming roles similar to every non vegetable lubrificant that is, BASE oil, VISCOSITY improver, EXTREME PRESSURE component....remembering that we deal with NON RECIRCULATING OILS . NO OIL IN A MODEL ENGINE WILL LIVE THERE FOR MORE THAN 10 SECONDS, so the requirements for it are extremely simplified in respect to car oils.
Ugo