Engine Oil Quiz

What is the primary function of engine oil?

• Coolant for engine components

• Lubricant for engine components

• Fuel for engine components

• Cleaner for engine components

Answer explanation

The primary function of engine oil is to act as a lubricant for engine components, reducing friction and wear. While it also helps with cooling and cleaning, its main role is lubrication.

Which function does engine oil NOT perform?

• Sealing

• Corrosion protection

• Insulation

• Lubrication

Answer explanation

Engine oil primarily provides lubrication, sealing, and corrosion protection. It does not function as an insulator, making 'Insulation' the correct answer as the function it does NOT perform.

What is one function of oil in an engine?

• Absorbs heat from engine components

• Increases engine noise

• Reduces fuel efficiency

• Increases engine weight

Answer explanation

One function of oil in an engine is to absorb heat from engine components, helping to prevent overheating and maintain optimal operating temperatures.

How does cleaning help in maintaining an engine?

• By increasing oil viscosity

• By carrying particles to the oil filter

• By reducing oil levels

• By enhancing engine power

Answer explanation

Cleaning helps maintain an engine by carrying particles to the oil filter, which prevents contaminants from circulating and causing damage. This process ensures the oil remains effective in lubricating engine components.

What is the main function of anti-wear agents in oil additives?

• To clean the engine

• To reduce engine wear

• To increase oil viscosity

• To prevent rust

Answer explanation

The main function of anti-wear agents in oil additives is to reduce engine wear. They form a protective layer on engine parts, minimizing friction and preventing damage during operation.

What is the primary benefit of using friction modifiers in oil?

• Increase engine noise

• Reduce engine friction

• Increase oil consumption

• Decrease oil viscosity

Answer explanation

The primary benefit of using friction modifiers in oil is to reduce engine friction. This leads to improved efficiency, lower wear on engine components, and better overall performance, making 'reduce engine friction' the correct choice.

Which of the following is a function of detergents in oil additives?

• To increase friction

• To clean engine deposits

• To prevent oxidation

• To suspend particles

Answer explanation

Detergents in oil additives help to clean engine deposits by breaking down and suspending contaminants, ensuring smoother engine operation. This function is crucial for maintaining engine performance and longevity.

What is the typical oil change interval for most cars?

• Every 1,000 to 3,000 km

• Every 5,000 to 7,500 km

• Every 10,000 to 15,000 km

• Every 15,000 to 20,000 km

Answer explanation

The typical oil change interval for most cars is every 5,000 to 7,500 km. This range is recommended for modern vehicles using synthetic oil, balancing engine health and maintenance costs.

What is one of the driving conditions that can affect oil change intervals?

• Highway driving

• City driving

• Off-road driving

• All of the above

Answer explanation

All driving conditions—highway, city, and off-road—can impact oil change intervals due to varying engine stress and operating temperatures. Therefore, the correct answer is 'All of the above'.

Which of the following is NOT a recommended research topic for oil change intervals?

• Recommended interval for a specific car model

• The car's color

• Type of oil used

• Driving conditions

Answer explanation

The car's color is irrelevant to oil change intervals, while the other options directly impact maintenance recommendations. Therefore, it is NOT a recommended research topic.