Technician A say that refrigerant leaks are most common where components join together. Technician B say that many manufacturers put leak-tracing dye in the refrigerator system of new vehicle. Which technician is correct?

Technician A

Explanation:

It is so common refrigerant leaks where components join together, all these components are subject to shock, vibration or friction, and are commonly produced in joints, screws or in areas of union and sealing of parts.

There is some product that we can detect because have a specific color, but is not leak-tracing, for example, oil or coolant leak have a color, but there are some liquids like gas that we must use specialized sprays to detect it.