Deck 13: Lubrication

Question 1

Technician A says most manufacturers recommend a minimum of 25 psi of oil pressure for every 1000 rpm. Technician B says short trips allow sludge to accumulate. Who is right?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Answer 1

B

Question 2

Name three oil additives that affect engine wear.

Answer 2

Oil additives that affect engine wear include:
pour-point depressants
corrosion and rust inhibitors
antifoam additives
friction modifiers
oxidation inhibitors
antiwear additives

Question 3

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?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Answer 3

C

Question 4

Technician A says the primary job of antiwear additives is to protect the camshaft and lifters. Technician B says ZDDP has been commonly used as an antiwear additive. Who is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 5

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?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 6

Oil pumps are being discussed. Technician A says gerotor pumps are used on OHC engines. Technician B says the gerotor pump has an uneven pumping action. Who is right?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 7

Excessive clearance at a main bearing will result in low oil pressure at the rocker arms or valve lifters.

Question 8

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

Question 9

What is the number one cause of engine failure?

Question 10

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

Question 11

Technician A says when oxygen is mixed with oil, it will extend the life of the oil. Technician B says excessively rich air-fuel mixtures can turn the oil black. Which technician is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 12

Synthetic oil molecules are all the same size.

Question 13

Technician A says pleated paper is generally used in bypass oil filters. Technician B says a relief valve that is stuck closed will result in high oil pressure at idle. Who is right?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 14

Oil is being discussed. Technician A says oil never wears out. Technician B says there are many additives in oil that will become depleted during engine operation. Who is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 15

What are the two base stocks for synthetic engine lubricants?

Question 16

An oil is rated at 10W-40. The "W" means winter grade.

Question 17

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?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 18

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?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 19

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

Question 20

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

Question 21

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?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 22

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

Question 23

When removing an oil filter, position an oil filter wrench at the _____ end of the filter.
A. inner
B. outer

Question 24

Technician A says that too much oil pressure can cause excessive oil consumption. Technician B says that viscosity goes up (oil becomes thicker) with lower temperatures. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 25

List three types of oil pumps.

Question 26

Technician A says that full-flow oil filters have a minimum resistance to oil flow compared to bypass filters and are not designed to filter out sludge. Technician B says that bypass oil filters are used in heavy-duty applications, primarily to provide filtration in addition to a full-flow filter. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 27

When an oil is tested at 0°F (-18°C), what letter will appear in the viscosity listing on the oil container?

Question 28

What part of the engine usually drives the oil pump?

Question 29

A _____ displacement pump has a fixed output per revolution.

Question 30

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

Question 31

Technician A says that a full-flow oil filter will bypass some of the oil under cold running conditions. Technician B says that a full-flow oil filter can bypass some of the oil during high-speed operation. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 32

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

Question 33

Technician A says that an oil filter used in a bypass system can filter out smaller particles from the oil than a full-flow system. Technician B says that a full-flow filter that is mounted in a horizontal or inverted position requires an antidrainback valve. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 34

What causes oil oxidation?

Question 35

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

Question 36

What could be indicated by low oil pressure at idle?

Question 37

When priming the oil pump, the pump should be spun in the same direction that the _____ normally rotates.

Question 38

The lubrication system should be able to produce a minimum of _____ psi for each 1000 rpm.

Question 39

What does SAE stand for?

Question 40

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

Question 41

Technician A says that the "W" in SAE 10W-40 stands for "weight." Technician B says that SA, or "nondetergent," oil should not be used in late-model automobiles. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 42

Technician A says that detergents and dispersants keep small particles suspended in the oil so that the filter can filter them out. Technician B says that detergents clean the surfaces within the engine. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 43

Technician A says that when the oil is cold and thick, it can bypass the oil filter. Technician B says that when the oil filter is dirty and restricted, oil can bypass the filter. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 44

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?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 45

Technician A says that when oil oxidizes it becomes heavier and forms varnish deposits. Technician B says that in-town driving is easier on the engine than driving on the freeway. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B