"Which Chain Lube is Best? Chain lube showdown!"
https://www.youtube.com/watch?v=MDtDIcLOTnU (11:56)

No, it's not a test of lubes specifically designed for bicycles. It's
a test for which lube is best for a farm hay baler chain drive. While
much of the video is not directly applicable to bicycle chain
lubrication, it's still rather interesting.

Also, make your own tester:
"How does the oil lubricity tester work?"
https://www.youtube.com/watch?v=N0gP4aEad-w

Compare with a real tribometer:
http://www.lewisresearch.com/our-testing-machines.html
https://nanovea.com/tribometers/

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558