Question 378 · Car theory test
What is the purpose of engine oil?
Pick an answer to test yourself.
Correct answer
It lubricates the engine.
Official explanation
The purpose of engine oil is to lubricate and cool the moving parts of the engine. Refer to the vehicle handbook for further information and guidance.
- Topic
- Vehicle maintenance
- Also in
- This question also appears in the motorcycle theory test.
Practise this topic in the app
Free demo questions for every topic, progress saved, a full mock exam in the official format.
Got it wrong, or had to think? That is one of 805 questions the car theory test can draw from. Sit the car mock exam in the official format (40 questions, 45 minutes, pass mark 35) and see how many more you would miss.
Related questions
- What may happen if the vehicle's engine oil is not changed as required?
- If a vehicle is driven with low oil pressure, what effect does this have on its engine?
- What should a driver do before checking the engine oil level on a vehicle?
- When is it recommended to use coolant?
- What happens if the vehicle has a flat battery?
- What is the primary purpose of the battery fitted to a petrol- or diesel-powered motor vehicle?