Antifreeze
Points :Definition, Antifreeze coolant, Prevent rust and corrosion, ic engine Overheating Problems, problems in internal combustion engines
Antifreeze, usually ethylene glycol is mixed with water to produce the engine coolant. Antifreeze has several
functions. Prevent winter freeze up
Antifreeze keeps the coolant from freezing in very cold weather (outside temperature below 32°F 0°C).
Coolant freezing can cause serious cooling system or engine damage. As ice forms, it expands. This expansion can
produce tons of force. The water pump housing, cylinder head, engine block, radiator, or other parts could be
cracked and ruined.
Prevent rust and corrosion
Antifreeze also prevents rust and corrosion inside the cooling system. It provides a protective film on par
surfaces. Lubricates water pump.
Antifreeze acts as a lubricant for the water pump. Ii increases the service life of the water pump bearings and
seals. Cools the engine
Antifreeze conducts heat better than plain water and, therefore, cools the engine better. It is normally
recommended in hot weather. For example, air conditioning increases the temperature of the air flowing through the
radiator. Antifreeze can help prevent overheating in very hot weather when the air conditioning is on.
Antifreeze/water mixture.
For ideal cooling and winter protection from freeze up, a 50/50 mixture of water and antifreeze is usually
recommended. It will provide protection from ice formation to about —34°F (-36.7°C). higher ratios of antifreeze
may produce even lower freezing temperatures but this much protection is not normally needed.
Note
Plain water should never be used in cooling system or low antifreeze functions just discussed will not be provided.

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