Coolers may already be installed on some models

- Jun 18, 2019-

Vehicle makers saw the benefits of a transmission cooler when they began to design transmissions to accommodate federal economy and emissions standards. The new transmissions ran hotter than previous designs, so several manufacturers built “twin-core” or “multi-core” radiators to cool down the transmission fluid. These radiators have a coil in them that allows the transmission oil to run through the same fins that the engine cooling system uses. Replacing the radiator requires special tools and parts for twin- and multi-cored models.