My 56 merc I had my automatic transmission oil changed using Type F, cleaned screen. It shifts good when cold, after it warms up to normal it hesitate and shifts. The book calls for Type A. Did I screw up by using Type F? 

The correct replacement for "A" is one of the Dextron Fluids. However I changed mine to "F" same as You. Is the Throttle Pressure control Rod adjusted to the correct Length?

  

You can still buy Type A at FREDS.

56 VIC  Gene Stoehr Sr.

I havnt done anything to the Throttle Control Rod it is not right it wont go into passing gear

Well you may find that its the bell crank too and how worn it is, can be a pain to get right after all these years.. Ask me how I know..



"Came too close to dying to stop living now!"

Problem solved changed to Type A (Dextron II) took 11 quarts drained torque converter and pan, now it shifts the way it should, thanks to all the

Questions? Does the 56 fordomatic have a drain plug on the torque converter? If you can drain it and the trans pan, how many quarts of typeA should you pour in for initial start up and after starting should you immediately start adding fluid.
All my modern transmissions I did only the pan but I want do this one complete if I can thanks.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

My 56 Merc drained through filler tube connection on pan, there are 2 plugs in the torque convertor 180 degrees apart remove both so it will drain. I removed the pan and cleaned  the filter when I put Type F in.     

Johnny, how qts did you pour in before initial startup? Did you then add while running? Thanks.

56 Vic, B'Ville 200 MPH Club Member, So Cal.

I had the transmission oil changed at my local garage, I would guess maybe 6 qts