plenty of UOA's for motor oil, I think we need to do some UOAs on trans fluid! Next change I will send it in to blackstone. (redline MT90)
Some GL5's carry a "MT-1" approval for manual trannies, and a bottle of supertech GL5 i saw, said "safe for use in tranmissions with yellow metal synchros" or something to that effect. Its still a hotly debated topic on BITOG, some users claiming sticky syncros after 40-50k use of GL5.
Best fluid I have tried was G52-171-A2, the synth stuff. Sadly it had to be drained, and it was 30 bux a liter! Stuff made shifting like butter.