Oil cooling is most commonly applied to high-performance motorcycle engines that have no water cooling system. The cylinder barrel is air-cooled, as is commonly used for motorcycles, but the cylinder head may require additional cooling. As there is already an oil circulation system available for lubrication, this oil is also piped to the cylinder head and used as a liquid coolant. Compared to an oil system used solely for lubrication, this requires additional oil capacity, a great flowrate through the oil pump and also the provision of, or an increase in the size of, an oil-air oil cooler. Oil Cooler refers to a procedure whereby heat is displaced from a 'hotter' object, into cooler oil and is the principle behind Oil Coolers devices. The oil transport the displaced heat usually passes throughout a cooling unit such as a radiator or less commonly a gas decompresser. The cooled oil repeats this cycle, to continuously remove heat from the object.
Oil has a higher boiling point than water, so it can be used to cool items 100C or higher.Oil is an electrical insulator; thus, it can be used inside of or in direct contact with electrical components.