The transmission oil cooler is located inside the right side end tank of the radiator. Two fittings on the outside of the outlet tank are connected to a transmission oil cooler located inside the outlet tank. Two transmission oil cooler lines are connected from the transmission to the fittings. A/T fluid is pumped by the transmission through a transmission oil cooler feed line to the transmission oil cooler upper inlet fitting. The A/T fluid temperature is regulated by the temperature of the engine coolant that surrounds the transmission oil cooler as the A/T fluid passes down through the transmission oil cooler. The A/T fluid leaves the transmission oil cooler through the lower transmission oil cooler outlet fitting and returns back to the transmission through the transmission oil cooler return line.