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WorksheetsEngine Oil Quiz
Total questions: 15
Worksheet time: 8mins
What is the primary function of oil in an engine?
To increase fuel efficiency
To provide lubrication
To prevent rust
To improve engine aesthetics
How does oil reduce friction between metal surfaces?
By chemically altering the surfaces
By creating a film between the surfaces
By increasing the temperature of the components
By absorbing metal particles
What is boundary lubrication?
When oil is supplied under pressure
When oil is supplied by splashing or misting
When no lubrication is provided
When oil prevents rust
What happens if the lubricant film breaks down?
The engine runs more efficiently
The engine cools down
Rapid wear and potential engine seizure occur
Oil consumption decreases
Which of the following is NOT a function of engine oil?
Cooling the engine
Cleaning engine parts
Preventing rust
Improving fuel quality
What is viscosity?
The thickness of the oil
The oil’s ability to flow
The oil’s temperature resistance
The oil’s chemical composition
What tool is used to measure oil viscosity?
Thermometer
Viscometer
Hydrometer
Pressure gauge
What is the role of detergent oils?
To improve lubrication under high pressure
To keep contaminants suspended and reduce sludge buildup
To increase oil viscosity
To lower oil temperature
Why is it important to regularly change engine oil?
To improve vehicle resale value
To prevent oil degradation
To reduce the need for other maintenance
To comply with fuel standards
What is the purpose of an oil pressure relief valve?
To filter out contaminants
To maintain safe oil pressure
To increase oil temperature
To clean the oil filter
What type of oil pump uses rotors to pressurize oil?
Geared pump
Vane pump
Eccentric (Bi-Rota) pump
Manual pump
What should be done when replacing a canister oil filter?
Tighten using a wrench
Replace the sealing ring and tighten hand-tight
Pre-fill the filter with oil before installation
Leave the sealing ring unchanged
What is the primary role of oil coolers in high-performance vehicles?
To increase oil pressure
To cool the oil
To store excess oil
To lubricate engine parts
Which engine components are lubricated under full-fluid film lubrication?
Pistons
Bearings
Valves
Spark plugs
Which components are included in the answer to the first question?
Piston rings and cylinder walls
Big end bearings, main bearings, cam bearings, and rocker shaft
Crankcase and oil filter
Valves and timing belt
