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--------------- FYI ---------------
Keeping your engine cool
by CANOE- posted May 31, 2004
Flushing your cooling system once a year is what most automotive manufacturers recommend for their vehicles. This is good advice since your car’s cooling system is vital to engine longevity.
The best habit to get into is to routinely flush your engine coolant at the beginning of the summer or the beginning of the winter. And while most shops charge $80 to $100 for this service, it is important to know that replacing the coolant does not involve merely changing the water.
Most radiators installed on the assembly line these days are made of aluminum and require a coolant mixture of 50/50 antifreeze (glycol) and water. Over a period of time, acids form in the coolant and the mixture becomes more prone to foaming preventing the water pump from distributing the fluid when and where necessary.
When having your system checked, make sure your corner mechanic performs these key steps:
Flushes the engine block and heater core using a flush "Tee" connected to the heater core hoses,
Cleans out the overflow bottle of any residue,
Pressure-tests the radiator cap,
Fills the cooling system with a 50/50 mixture of water and manufacturer-recommended antifreeze (glycol),
Pressure-tests the system at a few pounds over the normal operating pressure to confirm there are no leaks,
Removes any debris that has accumulated on the front of the radiator or grill to keep airflow unobstructed and allow the radiator to effectively do its job (airflow through the radiator is what removes the heat that the coolant carries to the radiator).
An integral part of the cooling system is the engine thermostat. The thermostat's job is to open when the coolant gets too hot to allow the coolant to travel more quickly to the radiator. If the thermostat senses the coolant is too cold, it closes to slow down the flow and keep the coolant in the engine longer. The result is a consistent engine running temperature.
The last remaining thing to have checked is the tension on the belt that drives the water pump; it should be replaced if there is any sign of stretching such as cracks or tears.
Keeping your engine cool
by CANOE- posted May 31, 2004
Flushing your cooling system once a year is what most automotive manufacturers recommend for their vehicles. This is good advice since your car’s cooling system is vital to engine longevity.
The best habit to get into is to routinely flush your engine coolant at the beginning of the summer or the beginning of the winter. And while most shops charge $80 to $100 for this service, it is important to know that replacing the coolant does not involve merely changing the water.
Most radiators installed on the assembly line these days are made of aluminum and require a coolant mixture of 50/50 antifreeze (glycol) and water. Over a period of time, acids form in the coolant and the mixture becomes more prone to foaming preventing the water pump from distributing the fluid when and where necessary.
When having your system checked, make sure your corner mechanic performs these key steps:
Flushes the engine block and heater core using a flush "Tee" connected to the heater core hoses,
Cleans out the overflow bottle of any residue,
Pressure-tests the radiator cap,
Fills the cooling system with a 50/50 mixture of water and manufacturer-recommended antifreeze (glycol),
Pressure-tests the system at a few pounds over the normal operating pressure to confirm there are no leaks,
Removes any debris that has accumulated on the front of the radiator or grill to keep airflow unobstructed and allow the radiator to effectively do its job (airflow through the radiator is what removes the heat that the coolant carries to the radiator).
An integral part of the cooling system is the engine thermostat. The thermostat's job is to open when the coolant gets too hot to allow the coolant to travel more quickly to the radiator. If the thermostat senses the coolant is too cold, it closes to slow down the flow and keep the coolant in the engine longer. The result is a consistent engine running temperature.
The last remaining thing to have checked is the tension on the belt that drives the water pump; it should be replaced if there is any sign of stretching such as cracks or tears.
