the engine cooling system uses a liquid containing anti freeze and a rut inhibitor. the cooing system uses anti freeze because it can go to very low temperatures without freezing and can handle extremely high temperatures that the engine produces. the cooling system also uses the rust inhibitor to prevent any rust from causing when the metal is wet and left for long periods of time. the combined liquid is pumped around the the engine block to keep it at a cool consistent operating temperature.
cooling system tests
coolant testing: to test the coolant we use a hydrometer by filling it up around about 66% so the hydrometer is floating and can give a reading. compare to manufacturers specifications and replace coolant if it is not within specifications
thermostat: to test the thermostat we need to heat it up to the manufacturers specifications and see if it opens up and would allow coolant to pass through to the radiator
pressure testing: pressure testing is used to check the cooling system for leaks
by pressurizing the coolant with air. If there is a leak the pressure
will go down over time causing the gauge will go down
reflection: after doing all of these tests we found that the coolant system was working well and was working efficiently.
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