Question: 2.7.04-205

2 Points

Licenses: C D C1E DE

Why do diesel and petrol engines need engine oil?

Choose one or multiple correct answers

A. So pistons and bearings do not seize up
B. To reduce internal friction
C. To lubricate the water pump

Scroll down to correct answer

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Correct answer

A. So pistons and bearings do not seize up
B. To reduce internal friction

Comment

Motor oil is needed in diesel and gasoline engines because it serves to reduce the internal friction and thus the piston and the bearing is not fixed run. The lubricating water pump is irrelevant.

Lubricants and antifreeze

Chapter 2.7.04

2.7.04-001 What should I ensure when refilling with engine oil?

2.7.04-002 What is the function of engine oil in a combustion engine?

2.7.04-003 How can you check the engine oil level?

2.7.04-101 How can you check the engine oil level?

2.7.04-201 Why does the coolant have to be checked for sufficient frost protection before winter begins?

2.7.04-203 What are the functions of anti-freeze in the coolant system?

2.7.04-205 Why do diesel and petrol engines need engine oil?

2.7.04-206 What are the requirements of lubricating oils for diesel engines?

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Question: 2.7.04-205

2 Points

Why do diesel and petrol engines need engine oil?

Correct answer

Comment

Lubricants and antifreeze

Chapter 2.7.04

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