The GM Hydra-Matic 9TXX 9-speed automatic ... elliptical oval cross-section that reduces the thickness of the torque converter, keeping the overall width of the engine and transmission as narrow ...

In this section of How It Works ... require considerable amounts of transmission fluid. Automatic transmission fluid's main purpose is to aid in valve operation (allowing the transmission to ...

The Hydra-Matic 6T45 (production code MH7) is a six-speed automatic transmission produced by ... and features a “hyper-elliptical” oval cross-section shape. This design reduces the thickness ...