Technician A says to check coolant level in the radiator when it is hot. Technician B says to check coolant level in the radiator when it is cool. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B

Question

Quizplus · Accepted Answer

Technician B is correct. Coolant level should be checked when the engine is cool to prevent burns or injury from hot coolant or steam. Checking the coolant level when the engine is hot can also give a false reading due to expansion of the coolant.

Technician a Says to Check Coolant Level in the Radiator