Vehicle Maintenance, Fluid Service/Lubrication

Question 1

What does a grease job entail?

Answer 1

Lubricating high friction points in the steering system, suspension, and driveline.

Question 2

When changing an engines oil filter what should you NEVER do?

Answer 2

Never use a filter wrench to tighten the filter, over tightening will smash the O-ring and cause leakage. Only tighten filters by hand.

Question 3

What does a lubricating service typically involve?

Answer 3

• Checking fluid levels
• Inspecting condition of all fluids
• Adding fluid as needed
• Locating fluid leaks and other obvious problems
• Grease job
• Changing engine oil and filter
• Changing automatic transmission fluid

Question 4

What do you use to pinpoint the source of internal part noises and problems?

Answer 4

Stethoscope

Question 5

What will happen to the oil when it is over filled?

Answer 5

Will cause oil to foam, which reduces it’s lubricating abilities

Question 6

What lubricant is specially used for rubber door weather stripping?

Answer 6

Silicone lubricant

Question 7

A good, all around lubricant that can be used on easy to reach hinges and latches is?

Answer 7

Chassis grease

Question 8

What lubricant is excellent for door and truck locks?

Answer 8

Graphite

Question 9

Check automatic transmission or transaxle fluid with the engine running. Check engine oil with engine off.

True or false

Answer 9

True

Question 10

What are the break fluid cautions?

Answer 10

• Brake fluid will damage painted surfaces.
• Do not mix with any petroleum oil it will damage brake seals.
• Do not leave brake fluid containers open. It will absorb moisture and hinder the fluids performance.

Question 11

What are the steps in checking automatic transmission fluid (ATF)?

Answer 11

• Make sure vehicle is level
• Engine is running
• It’s at operating temperature
• In park or neutral (hand brake on)

Question 12

Where do you usually find the automatic transmission dipstick?

Answer 12

Normally behind engine, and to one side

Question 13

How do you know when to change the automatic transmission fluid on a vehicle?

Answer 13

If it smells burnt, has discoloration (looks dirty)

Question 14

What is engine coolant made out of?

Answer 14

Mixture of water and antifreeze

Question 15

When do you change an engines coolant?

Answer 15

Every two years max

Question 16

What happens to engine coolant after prolonged use?

Answer 16

Coolant will deteriorate, become corrosive and filled with rust.

Question 17

What issues will prolonged engine coolant cause?

Answer 17

Maybe result in premature water pump, thermostat, and radiator failure

Question 18

When performing a complete Lubrication service be sure to also lubricate which parts of the body?

Answer 18

High friction points of the cars body

Hinges, and latches on doors, hood and trrunk

Question 19

What are the functions of the engine Lubrication system?

Answer 19

• Reduces friction and wear between moving parts
• Helps transfer the wear between moving parts
• Clean the inside of the engine b removing contaminants
• Cuts power loss and increases fuel economy
• Absorbs shock between moving parts to quiet engine operation

Question 20

What does vehicle maintenance include?

Answer 20

Any operation that will keep a car in good running condition.

Question 21

A cars warranty can become void if improper ______ or incorrect _______ procedures are used.

Answer 21

Fluids, service

Question 22

Where should the oil line sit when checking oil fluid?

Answer 22

Between the ADD and FULL

Question 23

Power steering fluid is checked by removing the ________ from the power steering pump. The engine should _____ running.

Answer 23

Dipstick, not be

Question 24

What happens to rubber and plastic parts when exposed to petroleum based lubricants?

Answer 24

Deteriorate

Question 25

What is a service interval?

Answer 25

The amount of time in miles (km) or months between recommended service checks or maintenance operation.

Question 26

What are the 4 body lubricants?

Answer 26

Engine oil
Graphite
Chassis grease
Silicone lubricant

Question 27

When doing a general inspection what are the 6 things we should check over?

Answer 27

Hoses
Fan belts 
Wiring 
Tires 
Exhaust system 
Steering system

Question 28

What is a oil film?

Answer 28

It’s what separates the engine parts from each other

Question 29

What does a oil film prevent?

Answer 29

Prevents metal on metal contact, this would cause parts to wear rapidly

Question 30

What is the velocity number used for?

Answer 30

Is used to rate the thickness of engine oil.

The higher the number the thicker that oil. A lower number would mean thinner oil.

Question 31

What is a 10 weight oil?

Answer 31

It acts like a thinner oil in cold temperatures for good starting

Question 32

What is a 30 weight oil?

Answer 32

Like a thicker oil at high temperatures for good oil pressure

Question 33

What are oil additive used for?

Answer 33

Are designed to provide oil with the special qualities that engine lubricating oil must have

Question 34

What do the letters printed on the oil container entail?

Answer 34

It’s a set of letters that denote how well the oil will perform under operating conditions

Question 35

Why is ATF dyed red?

Answer 35

To prevent confusion of this substance with other lubrication oils

Question 36

What are the characteristics good grease must have?

Answer 36

Consistency 
Stability 
Oxidation resistance 
Ability to protect against friction 
Feed ability