My Powerglide expels its fluid

Question:

I have a 1956 Chevy with Powerglide transmission problems. It’s a V-8 car with a standard 1956 Powerglide transmission. The transmission works fine and does not leak until the car is parked for a while. After being parked for a while it will often expel the transmission fluid up through the filler tube, losing approximately 2/3 of a quart. Do you have any idea what is wrong?

Answer:

The transmission’s oil pan is not large enough to hold all of the fluid in the unit. When the car sits idle for an extended period the fluid has sufficient time to drain out of the torque converter and other areas in the upper portion and all of it follows the dictates of gravity and runs into the pan. As the fluid level rises it can find its way out of a weak seal. Most often that’s the area where the fill tube inserts into

the body. Try resealing the tube. Of course, it’s always a good idea to run your car regularly to help keep everything, including the transmission, working properly.