Two technicians are discussing testing coolant for proper pH. 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. Which technician is correct?

Question

Quizplus · Accepted Answer

Coolant typically has a pH above 7 when new and can become more acidic with use. OAT and HOAT coolants generally have a lower pH when new compared to traditional IAT coolants.

Two Technicians Are Discussing Testing Coolant for Proper PH