Oil coolers are basically a type of radiator which cools oil that is heated up by the object it cools. This cooled oil will ceaselessly flow backwards and forwards in order to maintain the object's temperature as low as possible.
The Benefits of Using an Oil Cooler
Oil is known to have a higher than that of water boiling point, which means it can be used to cool parts that are operating at temperatures of 212 °F or higher. Oil is even a natural insulator against electricity, so it can be used inside of electrical components or in direct contact with them.