The initial automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was introduced for the 1948 product 12 months. In typical driving, the Dynaflow utilized just the best gear, relying on the torque multiplication with the torque convertor at decrease speeds. https://gearboxauto98528.blogsmine.com/34588457/rumored-buzz-on-gearbox-auto