This man knows what he is talking about..... I would take his advice with some serious thought.
He does, and I do. However, he's not the only one around here who has/does align race cars manually with string, and it doesn't mean we always reach the same conclusion given our different situations.
aMaff's (and initially, my) main reservation about the hub stands was the cost. But like I said before, I have 3 friends on board for using them. 3x$80 being chipped in takes a big chunk out of that purchase price and makes the decision pretty easy.
This. End of story. No questions asked.
That is a remarkably absolute and uninformed statement to make. GM Sychromesh is a very thin transmission transmission oil, it appears to be 5w30 or 10W30 engine oil with some friction additives in it. The low cold-temperature viscosity is why it feels so smooth at lower temperatures and some friction modifiers make it perform better in a transmission than regular engine oil, which some cars specify.
I picked AMSoil 75W-90 for several reasons: my Miata is rarely driven below 50F, this last week being about the only time it will be driven in such cold weather this year. I have a turbocharged engine with probably 2x or more the power of a stock 1.6L with big sticky tires, so the high pressure additives and high temperature protection offered by 75W90 oils are important. I have a 6-puck clutch and auto-x my Miata, so the shock-load protection of AMSoil 75W90 is also beneficial. AMSoil75W90 is fully synthetic, indicating that it will last longer than the semi-synthetic GM synchromesh oil, especially under high temperature and high load use. I did a lot of research on this before picking AMSoil, it is rated as about the best 75W90 transmission oil by many Miata owners who have tried all of the big names (RedLine, Mobil, FoMoCo, etc). I considered sychromesh oils in various flavors, but decided against them for the aforementioned reasons.
As with the FM stands, cost is always a concern. Fortunately a friend of mine is an AMSoil dealer and I can get AMSoil products drop-shipped to me for wholesale cost, a fraction of RedLine MTL or FoMoCo MTL.
My point is that synchromesh might work for some people, but it is not the best answer for everyone 'end of story, no questions asked.'