1955 recommended manual transmission servicing

[Lil Blue 55]

Have a three speed with overdrive. What's you preferred procedure. Finding lots of conflicting info.
Like oil weight, drain plugs and location, preferred method. Thanks

 

[Brax]

Have a three speed with overdrive. What's you preferred procedure. Finding lots of conflicting info.
Like oil weight, drain plugs and location, preferred method. Thanks

Can't imagine not owning the shop manual when you do work yourself. $35 is a low price to pay when you want it done correctly.