This informative article needs further citations for verification. Make sure you support increase this post by introducing citations to reputable resources. Unsourced material can be challenged and eliminated. While using the three-passage torque converter, two passages are used for transmission oil (ATF) move through the torque converter and for clutch https://torque-converter-clutch42962.ttblogs.com/13640207/details-fiction-and-torque-converter-clutch