Locked Period: Together with the clutch engaged, the torque converter transitions from the fluid coupling into a mechanical coupling, doing away with slippage and improving drivetrain effectiveness. Even a minimum degree of oil in implement, below centrifugal pressure of rotation can begin to force the piston and drag the clutch. https://torqueconverterclutch96306.techionblog.com/34279545/not-known-factual-statements-about-torque-converter-clutch