Antifreeze, or engine coolant, is a liquid used to transport heat away from an engine. Antifreeze is mixed with water to lower the freezing point of the liquid to protect components in cold temperatures.
The coolant expands when heated, contracts when cool. The coolant reservoir gives the coolant a place to come and go as needed.
To drain the radiator when it is time to change the coolant.
To pump coolant around the engine to absorb heat, and through the radiator to cool the coolant down again
Exchanges heat from the coolant to the air which flows through the fins.
It replaces coolant back into the system by drawing coolant from the reservoir that was pushed out into the reservoir during the heat up process.
The Automotive Water Pump In general the main purpose of the automotive water pump is to circulate the coolant of the cooling system of a water-cooled engine.
The water pump circulates the coolant to cool the engine.
You still need to flush the engine block and heater core.
To control the flow of coolant in the engine, so the temp will reach normal operating range
Antifreeze, or engine coolant, is a liquid used to transport heat away from an engine. Antifreeze is mixed with water to lower the freezing point of the liquid to protect components in cold temperatures.
To let the engine warm up by closing flow of coolant. When operating temperature is reached the thermostat pops open allowing full flow of coolant. Totally necessary in winter !
To allow coolant circulation through the engine when the thermostat is closed.