On high-performance and high-power reinforced engines, oil coolers must be installed due to the large thermal load. The oil cooler is arranged in the lubricating oil circuit, and its working principle is the same as that of the radiator. Engine oil coolers are divided into two categories: air-cooled and water-cooled. Cars with automatic transmissions must be equipped with a transmission oil cooler because the oil in the automatic transmission can overheat. Overheated oil can reduce transmission performance and even cause transmission damage. The transmission oil cooler is usually a cooling pipe, which is placed in the water outlet of the radiator, and the transmission oil flowing through the cooling pipe is cooled by the coolant. Use metal pipe or rubber hose to connect between transmission and cooler.
