The first automatic transmission to use a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was launched for the 1948 product yr. In ordinary driving, the Dynaflow applied only the best gear, counting on the torque multiplication on the torque convertor at decrease speeds. The Dynaflow https://knoxjqrsq.blogpayz.com/34221756/gearbox-auto-secrets