The initial automatic transmission to use a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was launched for the 1948 design year. In ordinary driving, the Dynaflow used just the prime gear, relying on the torque multiplication of the torque convertor at lower speeds. The https://johnathanwxvrm.therainblog.com/33048572/details-fiction-and-gearbox-auto