The impeller (one) is rotated with the crankshaft and it converts the mechanical Electricity in the crankshaft into kinetic Vitality by putting the fluid in motion. M (maximum performance level): in this level the torque converter hits its highest performance as torque converter, the fluid flows with no affect losses https://torque-converter-clutch66418.bloguetechno.com/a-simple-key-for-torque-converter-clutch-unveiled-69098952