Cooling Systems

Auto manufacturers have learned that a balanced coolant solution of water and ethylene glycol is an ideal mixture of carry off heat, under a variety of outside temperature extremes and operational loads. (air conditioning, heavy loads).

Bad coolant: It is strongly advised against the use of ordinary fresh tap water in cooling system for two reasons: (1) ordinary fresh tap water contains harmful chemicals and minerals like salts and iron which increase the formation of rust and scale. (2) ordinary water (without pressure cap) starts boiling at 100C. The usual operating temperature of water in a car is approx 90C. The difference is not enough for providing sufficient cooling when driving in the summer, or long distance at high speed, or in traffic jams during peak hours, causing boiling radiator water and elevated engine temperatures. Conclusion: ordinary water cannot provide enough cooling for the engine, (boiling radiator), the engine temperature will increase and easily cause engine damage and expensive repairs. The increased rust and scale formation are other reasons for deteriorating the cooling capacity of the radiator.

Good coolant it made from deionized water (water from which all harmful chemicals have been taken). The main component of good coolant, recommended by car manufactures and dealers, contains Ethylene Glycol (also called antifreeze). Ethylene glycol does not give only frost protection during the winters in Europe, but also increases the boiling point of coolant water.