The effect of the oil cooler is to cool the oil and keep the oil temperature within the normal operating range. In the high-power enhanced engine, due to heat load, you must install the oil cooler. When the engine is running, the viscosity of the oil becomes thinner as the temperature increases, reducing the lubrication capacity. Therefore, some engines are equipped with an oil cooler, its role is to reduce the oil temperature, to maintain a certain viscosity of the oil, oil cooler arranged in the lubrication system circulation circuit.