Using the 3-passage torque converter, two passages are useful for transmission oil (ATF) flow with the torque converter and for clutch cooling, even though the third passage is employed independently to control the lock and unlock from the clutch. An overheating transmission can spell problems for your personal torque converter. https://torqueconverterclutch22974.blogpayz.com/34053064/not-known-factual-statements-about-torque-converter-clutch