Using the 3-passage torque converter, two passages are employed for transmission oil (ATF) move with the torque converter and for clutch cooling, when the 3rd passage is used independently to regulate the lock and unlock of your clutch. This is a function over and above what an easy fluid coupling https://torque-converter-clutch43085.dailyhitblog.com/39401584/detailed-notes-on-torque-converter-clutch