The very first automatic transmission to use a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was released to the 1948 model calendar year. In typical driving, the Dynaflow employed only the major gear, counting on the torque multiplication of your torque convertor at lessen speeds. https://daltoncmuyb.xzblogs.com/74870951/top-latest-five-gearbox-auto-urban-news