A vehicle's cooling system is being flushed and refilled. When is the proper time to add coolant conditioner?

Practise this ASE T7 Truck HVAC Exam Prep question free, then download the PDF, watch the video walkthrough, or unlock timed mock exams for the full web bank.

Download PDF Watch video

Multiple choice — select the best answer

AAfter the engine reaches operating temperature
BOne week after refilling the system
COnly when corrosion is detected
DWhen refilling with new coolant

✓ Correct answer: D. When refilling with new coolant Coolant conditioner should be added when refilling the system with new coolant to ensure proper protection from the beginning of the new coolant's service life.

.q-expl{display:block!important}.q-opt[data-idx="3"]{border-color:#16a34a;background:#f0fdf4}.q-opt[data-idx="3"] .oltr{background:#16a34a;color:#fff}.q-opt{cursor:default!important;pointer-events:none}

Keep practising. Use the free ASE T7 Truck HVAC Exam Prep PDF, watch the YouTube walkthrough, or unlock all 10 web questions with timed mock exams.

Free PDF Video walkthrough

← Previous Next → 🎲 Random question ↩ Back to all questions

Keep practising

A vehicle's cooling system is being flushed and refilled. When is the proper time to add coolant conditioner?

Related questions

Free practice here. Timed mocks when you are ready.