The initial automatic transmission to employ a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was launched for that 1948 product year. In ordinary driving, the Dynaflow utilized only the top rated equipment, counting on the torque multiplication in the torque convertor at lessen speeds. https://gearbox-auto21852.loginblogin.com/41511598/how-much-you-need-to-expect-you-ll-pay-for-a-good-gearbox-auto