
Originally Posted by
Bill R.
torque converter goes, don't worry about it. Just change the fluid like you would on a normal change and then repeat it in a few days and you'll flush as much as is really needed. When you pull the pan and change the filter screen you'll end up using just a little over 3 quarts. If you then just drain the fluid again in a couple of days you'll end up replacing most of the fluid anyway. total volume of the transmission including the torque converter on the 535 is 7.5 liters, each fluid change will replace a little over 3 liters, so 2 changes in a week and you'll get most of it, or enough that i wouldn't worry about it. I change mine every time i do my engine oil. Its cheap for the fluid and dexron III/mercon is a semi synthetic fluid anyway. About every 20k i replace the pan gasket and screen the rest of the time i just change the fluid. Mine alway comes out looking clean.