Oil Contaminants Quiz

Which of the following is a solid contaminant found in oil?

• Water

• Fuel

• Metal wear particles

• Air

What is the primary cause of metal wear particles in oil?

• Chemical reactions

• Wear and tear of engine components

• Fuel dilution

• Microbial growth

Which of the following is NOT a consequence of oil contamination?

• Increased wear and tear

• Improved lubrication efficiency

• Corrosion of engine components

• Increased maintenance costs

What is a possible result of excessive soot in engine oil?

• Reduced oil viscosity

• Thickening of oil

• Prevention of wear

• Improved filtration

Which liquid contaminant enters oil through leaks in the fuel system?

• Water

• Coolant

• Fuel

• Air

How does free water in oil primarily affect engine components?

• Improves lubrication

• Causes rust and corrosion

• Increases oil viscosity

• Enhances fuel efficiency

What type of contamination can cause sludge formation and filter blockage?

• Solid contaminants

• Liquid contaminants

• Chemical contaminants

• Biological contaminants

Which of the following can lead to oxidation and foaming in oil?

• Entrained air

• Dust particles

• Soot deposits

• Fuel contamination

What is the main purpose of proper filtration in oil maintenance?

• To increase oil viscosity

• To remove contaminants from oil

• To prevent chemical reactions

• To add additives to the oil

What type of contaminant can cause chemical reactions that degrade oil additives?

• Microorganisms

• Acids and alkalis

• Air bubbles

• Dust particles