S (stall stage): With this point the turbine pace is zero plus the impeller is rotating; the efficiency from the stall position is bare minimum, all over 50%, which means that half of the ability coming from your motor is lost as a result of friction and dissipated as warmth; https://keeganjuckq.weblogco.com/34099390/the-2-minute-rule-for-torque-converter-clutch