Exam 13: Lubrication

What is the name of the part of the oil additive package that swells, allowing oil to maintain its viscosity as it heats up?

A _____ displacement pump has a fixed output per revolution.

Technician A says additive packages make up as much as one-third of the volume of a container of oil. Technician B says friction modifiers added to oil help the oil to stick to metal surfaces. Who is right?

What part of the engine usually drives the oil pump?

Technician A says a windage tray helps to keep air pockets out of the oil at high speeds. Technician B says the lubrication system should be primed before starting an engine that has just been rebuilt. Who is right?

List three types of oil pumps.

Technician A says that an SAE 40 oil has a lower viscosity than an SAE 20W-50 at engine operating temperature. Technician B says that a 10W-40 multiviscosity oil reaches bearings faster when the engine is first started than an SAE 30 single viscosity oil. Who is right?

Technician A says leaking vacuum lines can allow dirt to be drawn into an engine. Technician B says a horizontally mounted oil filter has an antidrainback valve. Which technician is correct?

Technician A says too much oil can cause excessive oil consumption. Technician B says viscosity goes up (becomes thicker) when the temperature goes up. Who is right?

What is the number one cause of engine failure?

Viscosity is a term used to describe the thickness or body of engine oil.

What organization administers the Engine Oil Licensing and Certification System (EOLCS)?

What oil filter part would allow oil to get to the bearings if the filter is plugged?

Under normal conditions, when is the only time that an oil film does not keep engine parts separated?

If sludge forms in a late-model engine, what additive is probably depleted?

What is the best API service classification for automotive engine oil?

Since the early 1960s, road draft tubes have been used to replace PCV systems.

In addition to preventing hydrocarbon emission, what are two main benefits of a PCV system?

Technician A says that oil pressure that fluctuates from high to low can be caused by a sticking oil pump pressure relief valve. Technician B says that a stuck-closed pressure relief valve will result in high oil pressure at idle (at normal operating temperature). Who is right?

Synthetic oil molecules are all the same size.