Motor oil is being discussed. Technician A says that the "W" in 10W-30 stands for "weight." Technician B says that thicker oils can cause lubrication problems in colder climates. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

The "W" in 10W-30 actually stands for "Winter," indicating the oil's viscosity in cold conditions, not "weight." Thicker oils can indeed cause lubrication problems in colder climates because they do not flow as well, making it harder for the engine to turn over and properly lubricate.

Motor Oil Is Being Discussed