I drained the oil from the TR6 box in my TR3. There seemed to be lot of tiny brass like flakes in the old oil which I assume are from the synchros. Is it normal to have some synchro swarf in old oil or are the properties of the 70/90 gear oil degrading the brass synchros.?
I've heard that GL4 gear oil does not affect the synchros but that it is difficult to find.....up here anyway. Apparently Redline makes a GL4 70/90 gear oil. Anyone using the Redline and did they find any difference in the way the gears shifted? I've also heard that in older gearboxes the Redline tends to leak somewhat?
I've heard that GL4 gear oil does not affect the synchros but that it is difficult to find.....up here anyway. Apparently Redline makes a GL4 70/90 gear oil. Anyone using the Redline and did they find any difference in the way the gears shifted? I've also heard that in older gearboxes the Redline tends to leak somewhat?