The 1st automatic transmission to utilize a torque converter (rather than a fluid coupling) was the Buick Dynaflow, which was introduced for the 1948 model year. In standard driving, the Dynaflow utilised only the prime equipment, relying on the torque multiplication from the torque convertor at lower speeds. The Dynaflow https://cruzhoppo.getblogs.net/66721144/the-gearbox-auto-diaries