Transmission Assembly Lube?

Most times i just coat the gears and bearings with gear oil when assembling, but this 5 speed is a bit more complex and i want to make sure i do not ruin it. What do you guys use for assembly lube for an AX5 5 speed? Do you soak the synchros in oil first? I found my synchros in teh tranny were not bad, but the brass was pretty dark and rough feeling.

 

What fluid does the ax5 take? I use trans assembly lube on auto trans because petroleum jelly doesn't disolve good in it. On manual trans I usually just assemble and drizzle some oil thats going in the trans on the parts. Ill usually just use the lube to hold bearings in place.

 

That is what i ended up doing. i rubbed a good coating of oil on the parts when assembling. For the AX5 i am using synthetic 10/30 motor oil. there is a big thread about it and i guess it was approved by Aisin. Kind of funny looknig at the transmission, you can tell it sat for long periods of time cause there is a very dark oil level line. So far i have the gears and shafts installed, i just need to do the shift rails, and i need to get the petrolium jelly for the input shaft bearings.