Technician A says that the automotive water pump is a positive displacement-type pump. Technician B says that the coolant mix should be a 50/50 split between antifreeze and water. Who is right?

Question

Quizplus · Accepted Answer

Technician B is correct because the recommended coolant mix for most automotive applications is indeed a 50/50 split between antifreeze and water. This mix provides optimal cooling and freezing protection. Automotive water pumps are typically not positive displacement pumps; they are centrifugal pumps, which means Technician A is incorrect.

Technician a Says That the Automotive Water Pump Is a Positive