What should you look for on the coolant reservoir during your inspection?

During a pre-trip vehicle inspection, it is crucial to ensure that the coolant reservoir is functioning properly. Checking for the coolant level is essential because an insufficient amount of coolant can lead to overheating, which may cause severe engine damage. Also, confirming that there are no cracks or leaks in the reservoir ensures that the system can maintain the necessary pressure and operate effectively. Any damage could lead to coolant loss, resulting in engine performance issues.

While observing the color of the coolant can provide insights into its condition and potential contamination, the primary focus during the inspection should be on the level and the integrity of the reservoir itself. This makes it clear that the coolant's physical state, including temperature, is not as critical as ensuring the functionality and structural integrity of the reservoir during the inspection process.