The primary automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was released to the 1948 design year. In standard driving, the Dynaflow made use of only the top rated equipment, counting on the torque multiplication with the torque convertor at https://jaredtekml.spintheblog.com/34546986/how-gearbox-auto-can-save-you-time-stress-and-money