The very first automatic transmission to work with a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was introduced with the 1948 product yr. In standard driving, the Dynaflow applied only the leading equipment, depending on the torque multiplication of the torque convertor at lessen speeds. https://claytonbcbzx.ja-blog.com/33871577/what-does-gearbox-auto-mean