The first automatic transmission to utilize a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was released with the 1948 model yr. In usual driving, the Dynaflow utilised only the major gear, relying on the torque multiplication on the torque convertor at reduce speeds. The Dynaflow https://gearbox-auto44084.onesmablog.com/the-greatest-guide-to-gearbox-auto-74767903