The very first automatic transmission to use a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was released to the 1948 model year. In usual driving, the Dynaflow employed only the top equipment, depending on the torque multiplication with the torque convertor at decrease speeds. The https://gearboxauto42852.blogvivi.com/34766309/helping-the-others-realize-the-advantages-of-gearbox-auto