1 ptsTOfficial number: 6712
What should you do if the engine coolant of a tractor is not visible in the reservoir?

Explanation
Correct answer: Check the level of the liquid in the reservoir.
The expansion tank, visible in the photograph, compensates for changes in the volume of the coolant caused by temperature. If the coolant is not visible in it, this indicates a low level throughout the entire system. In this situation, the coolant level should be checked directly in the radiator to assess the actual loss and prevent potential overheating and engine damage.