Which weekly action is specified to protect the cooling system, specifically the heat exchanger?

• A. Visual inspect, weekly.
• B. Check, weekly.
• C. Test monthly.
• D. Replace coolant annually.

Answer: (B)

Weekly checks of the cooling system are required to protect the heat exchanger. By actively checking, you verify coolant level, look for leaks, and assess overall condition of the cooling circuit (hoses, clamps, and connections) to ensure proper flow and heat transfer. This proactive step helps catch developing problems—like a slow leak, coolant contamination, or air in the system—before overheating or corrosion can impair the heat exchanger’s performance. Merely visually inspecting weekly can miss hidden issues, and testing monthly or replacing coolant annually address different maintenance tasks and aren’t the weekly action specified.