S (stall level): On this issue the turbine velocity is zero as well as impeller is rotating; the performance inside the stall level is bare minimum, close to 50%, which suggests that half of the ability coming in the motor is missing through friction and dissipated as heat; at this https://devinnpmie.bloguetechno.com/not-known-factual-statements-about-torque-converter-clutch-69357171