Servo Kool HWC 50 is an environment-friendly radiator coolant.It has long service life.It is mainly used for industrial vehicles and passenger cars. It does not contain amines, borates, nitrites,phosphates and silicates.30 parts of fluid is mixed with 70 parts of water for better results in most of the vehicles.Even though it is used with 700 PPM hardness water, It maintains the performance.It is a 50:50 concentration of Servo kool HWC and water.