Quiz #13: Lubricant Additives and Their Functions Team 9 Sep, 2024 Lubricant Additives Quiz 1. What is the primary purpose of anti-oxidant additives in lubricants? A) Reduce friction between surfaces B) Improve lubrication under high loads C) Prevent oil degradation due to oxidation D) Enhance oil viscosity 2. Which type of additive is specifically designed to improve the lubricating properties of oil under extreme pressure conditions? A) Detergents B) Dispersants C) Extreme Pressure (EP) Additives D) Corrosion Inhibitors 3. What is the role of anti-wear additives in a lubricant? A) To form a protective layer on metal surfaces to prevent wear B) To reduce the oil's viscosity C) To increase the flash point of the lubricant D) To remove contaminants from the oil 4. Which additive helps maintain the cleanliness of an engine by keeping contaminants suspended in the oil? A) Anti-foaming agents B) Dispersants C) Anti-oxidants D) Viscosity Index Improvers 5. What is the main function of corrosion inhibitors in lubricants? A) Reduce friction B) Enhance thermal stability C) Protect metal surfaces from rust and corrosion D) Improve pour point 6. Which of the following additives is commonly used to reduce the pour point of lubricants? A) Detergents B) Pour Point Depressants C) Friction Modifiers D) Anti-oxidants 7. What is the purpose of friction modifiers in engine oils? A) To increase the oil's viscosity B) To enhance wear protection C) To reduce internal friction for better fuel economy D) To prevent oil foaming 8. Which additive type is used to minimize the formation of foam in lubricating oils? A) Anti-wear additives B) Anti-foam agents C) Detergents D) Extreme Pressure (EP) additives 9. What is the effect of viscosity index improvers in lubricating oils? A) Increase oil's acidity B) Stabilize viscosity over a wider temperature range C) Enhance anti-wear properties D) Lower the oil's density 10. Which additive is primarily responsible for neutralizing acids formed during the combustion process in engine oils? A) Dispersants B) Anti-foam agents C) Detergents D) Total Base Number (TBN) Improvers Submit
