What tool would be used to find a leak in the cooling system?

Question

Quizplus · Accepted Answer

A cooling system pressure tester is used to find leaks in the cooling system by pressurizing the system and identifying any drops in pressure, indicating a leak. A coolant hydrometer measures the specific gravity of the coolant and is not used for diagnosing leaks. A cooling system vacuum tester is used to test for leaks in the vacuum lines of the cooling system, not for the coolant system. A coolant spectrometer is used to test the concentration of coolant and is also not used for diagnosing leaks.

What Tool Would Be Used to Find a Leak in the Cooling