autoxCLS said:
Do you have a 2.2 or a 2.3?
How do you know the syncros are going? Did you RPM match and see if it still grinds?
I recall a Celica GTS I had that would grind... switched to Mobile-1 transmission oil and it fixed it.
BTW - remember that most 5-speed rebuilt trannies leave 5th gear alone - so if you do get a new tranny, get a brand new one or else 5th is likely to still grind. 
if you rev match, then that elimintes the use of the synchro's. it might be the MTF going bad because its not as noticeable when the car has been driven for a while.
there is no aftermarket fluid that can be used in the 2.2's because fookin honda had to change the way the tranny was built.
is years previous to 96, all the components were metal, after that years they started to use some plastic components in the tranny to save costs. only honda makes the fuid for the manual trannys becase nobody else wants to take the risk of dishing out money for broken trannys because they didnt get the lubrrication grade right.
