Technician A says excessive buildup of sludge may indicate a poor oil change schedule. Technician B says a buildup of scale in the engine can cause cooling system blockage. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because sludge buildup often results from infrequent oil changes or using low-quality oil, which can lead to poor engine performance and damage. Technician B is correct because scale buildup, typically from minerals in the coolant, can block the cooling system, leading to overheating and engine damage.

Technician a Says Excessive Buildup of Sludge May Indicate a Poor