Transmission Cooling - Overview

The transmission fluid cooling system consists of a heat exchanger mounted to the transmission. The heat exchanger has both transmission fluid and engine coolant flowing through it in separate chambers. When the transmission fluid is cooler than the engine coolant, the heat exchanger warms the transmission fluid. When the transmission fluid is warmer than the engine coolant, the heat exchanger cools the transmission fluid. Transmission fluid cooler tubes and engine coolant tubes connect the heat exchanger to the transmission and the radiator hoses, respectively.