S (stall level): In this particular stage the turbine velocity is zero plus the impeller is rotating; the performance in the stall point is minimum, around 50%, which means that half of the power coming in the engine is misplaced by way of friction and dissipated as warmth; at this https://torque-converter-clutch96173.thenerdsblog.com/40044587/top-torque-converter-clutch-secrets