Two technicians are discussing oil coolers. Technician A says that when inspecting oil-to-water type coolers, look for mixing of the fluids: oil in the coolant, and coolant in the oil. Technician B says that when inspecting oil-to-air type coolers, look for oil in the coolant only. Who is correct?
Select one:
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B