Hello wrw1@charter.net
Yes you need to change the radiator, flush the transmission and coolant.
You may have leak in the radiator.
Transmission cooler lines are connected to the radiator.
A leak within the radiator may have caused both fluids to mix
dropping the transmission oil pan will drain all fluid both in the converter and transmission.Don't forget to replace the filter.

Sunday, January 17th, 2010 AT 3:24 PM