Question

Two technicians are discussing proper pH levels of coolant. Technician A says that coolant has a pH above 7 when new and becomes lower with use in an engine. Technician B says that OAT and HOAT coolants have a lower pH when new compared to the old green IAT coolant. Who is correct? A. Neither Technician A nor B B. Both Technicians A and B C. Technician B D. Technician A

Answer 1

Answer is B. Both Technicians A and B.

Answer 2

BOTH TECHNICIAN A AND B ARE CORRECT.
Coolants are installed in vehicles to prevent overheating. When new, the coolants are usually basic in nature, that is, they have pH above 7 but with time the pH decreases. Also, OAT and HOAT coolant have pH values which is lower than that of old green IAT coolant when newly bought.