When flushing cooler lines, pay attention to the maximum _____ recommended by the manufacturer.

When flushing cooler lines, pay attention to the maximum _____ recommended by the manufacturer.

• A. Volume
• B. Temperature
• C. Pressure
• D. Torque

Answer: (C)

When flushing cooler lines, you must stay within the maximum pressure the manufacturer specifies. The cooling system and its hoses, clamps, and fittings are designed to handle a certain pressure, and pushing fluid through at higher levels can cause ruptured hoses, blown seals, or damaged components. Using the correct, controlled pressure ensures the flushing medium can clean out debris effectively without risking harm to the system. Volume and temperature matter for how well the flush works, but the critical limit is the pressure: exceeding it is what most often leads to damage.