Coolant systems

The minimum temperature difference between the top radiator hose and the bottom hose is ______.

• 25 degrees

• 30 degrees

• 10 degrees

• 5 degrees

When "green" coolant and extended life coolant are mixed, the antifreeze in the radiator will turn what color.

• Red

• Blue

• White

• Brown

If the pressure in the cooling system is raised 1 psi, the boiling point will raise ____ degrees.

• 3

• 5

• 10

• 1

The thermostat controls the flow of coolant to the radiator.

• True

• False

What is the first step in troubleshooting a cooling system problem?

• Drain the coolant

• Check for leaks

• Ask the customer questions

• Check the oil

When coolant mixes with oil it turns ______.

• Black in color

• Milky in color

• Red in color

• It has no color

You can't test for compression gases in the coolant system.

• True

• False

The pressure test tool can also be used to test the radiator cap.

• True

• False

• The

A cause of an overheating engine can be______.

• Bad water pump

• Bad thermostat

• Plugged radiator

• All of the above

It is safe to remove the radiator cap on a hot engine.

• True

• False