How is the engine coolant level checked?

The engine coolant level is correctly checked by inspecting the coolant reservoir when the engine is cold. This method is preferred because a cold engine is safe to approach, and the coolant will settle, allowing for an accurate assessment of the level without the risk of burns or pressure release that may occur with a hot engine.

When checking the coolant level, the reservoir typically has markings that indicate the minimum and maximum levels. If the coolant level is low, it may signal a leak or other issues within the cooling system that need to be addressed. Checking the coolant while the engine is cold also prevents potential injuries from the hot coolant or steam that can escape from the system.

In contrast, the other options do not accurately provide a method for checking the coolant level. For instance, inspecting the oil dipstick relates to engine oil levels and not coolant. Observing exhaust color may provide hints about engine performance, such as the combustion process, but does not indicate coolant levels. Feeling the radiator cap could give an indication of the cooling system’s pressure but does not directly measure the coolant level.