HOSES AND COOLING SYSTEM
Hoses are used to carry coolant (i.e., antifreeze) to and from the engine and they are a part of the engine’s cooling system. The cooling system is designed to remove excess heat from the engine and to provide engine heat for passenger comfort and windshield defogging. The engine coolant must provide several functions to properly protect your engine year-round:
Freeze protection – The coolant must not freeze solid in order to protect the engine block from cracking.
Boil-Over protection – Coolant, when properly mixed with water and under the proper system pressure, has a significantly higher boiling point than just water alone. This enables modern engines to run hotter, reducing emissions and increasing overall engine efficiency.
Corrosion protection – Coolant contains additives to keep the inside of the engine, radiator and other system parts from being attacked by corrosion.
Lubrication – Coolant contains lubrication additives to extend water pump seal life.
Protection for rubber parts – Coolants must be compatible with rubber parts such as radiator and heater hoses, and water pump seals
CHECK YOUR COOLANT
During oil changes, check that your coolant is filled to the proper level. Every two to five years or 250,000 kms, you should change your coolant. Most newer cars on the road today have extended life coolants. Refer to your owner’s manual for recommended change intervals. When checking hoses (be sure engine is cool, turned off and ignition key is removed!) you should be looking for the following: leaks and excessive hardness or softness. If your hoses have any of those problems, have them replaced. Also, be sure to check the clamps on your hoses to make sure they are tight. Finally, if your hoses are over three years old, you should consider having them replaced.
Check your coolant and change it at least every 5 years or 250,000 kms for extended life coolant and every two years for silicate based coolants.
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