Hello everone, Its my first time here so here we go. I  just pulled an old 1940ish co-op E-3 out of an old farmers tree line and have began to bring it back to life after decades of retirement. Ive rebuild the carb, distributor, & rewired. I dont have an IT manual for this yet but I am borrowing a friends shop manual for the time being. How much and what type of fluid goes into the tranny, also is it a common sump for the rear end? Where would I search for a serial number? Thanks for the help, bye for now, Mike.