What is the difference between coolant and ordinary water?

[StDaniella]

Drivers are quite familiar with coolant, which is used in the engine cooling system of automobiles. Nowadays, coolant is also employed in computer liquid cooling systems. There are significant differences between coolant and ordinary water. So, what are the differences between coolant and ordinary water? The distinctions mainly include the following aspects: 1. Different water quality. Coolant contains anti-corrosive additives, making it less prone to deterioration, whereas ordinary water harbors microorganisms and can easily spoil and develop odors. 2. Different corrosiveness. Under high temperatures, coolant does not corrode cooling heads or radiators, but using ordinary water can lead to corrosion of cooling heads or radiators. 3. Different heat dissipation coefficients. Coolant has a higher heat dissipation coefficient, while ordinary water has a lower one.