As most on this forum know, most vintage mercedes automobiles have a drain plug in the torque converter of the transmission. this allows for a total transmission fluid drain which is a good thing.

I recently read that for cars that do not have such a drain plug, people take off one of the transmission hoses that goes to the cooler and have a helper start the engine while watching the old fluid come gushing out.

This facilitates total flushing out the old transmission fluid. I have never done anything like this, is it actually possible? Is there anything I need to watch for if I try this? Is it possible to install a drain plug in the Lincoln's torque converter?

All input and advice is appreciated.