Lubricants-2

Which of the following is NOT a function of diesel engine lubrication systems?

• Reduce friction to minimize wear and heat

• Cool and clean components

• Increase the supply of oil

• Minimize corrosion

Which of these is a function of diesel engine lubrication.

• Sealing piston rings

• Cooling and cleaning components

• polish components

• Storing an adequate supply of oil

What are the two sources from which lubricating oil can be derived?

• Mineral oil and synthetic oil

• Mineral oil and biological sources

• Synthetic oil and biological sources

• Crude oil and synthetic oil

What does the API Service Symbol indicate on oil containers?

• The price of the oil

• The temperature tolerance of the oil

• The certification and performance level of the oil

• The brand of the oil

Which of the following best describes a fluid with high viscosity?

• A) Flows easily

• B) Flows with difficulty

• C) Evaporates quickly

• D) Changes color rapidly

What is the main purpose of viscosity additives in multigrade oils?

• To change the color of the oil

• To improve the oil's smell

• To maintain the oil's viscosity over a range of temperatures

• To increase the oil's boiling point

Pour point is:

• Highest temperature a fluid will pour at

• Highest angle a fluid will pour at

• Lowest temperature a fluid will pour at

• Lowest angle a fluid will pour at

Engine oils do which of the following

• Lubricate only

• Lubricate and cool

• Lubricate, cool, clean, create pressure

• Lubricate , cool, clean, seal

A multigrade oil is an oil that...?

• Is for supercars

• Has different viscosities 

• Is for hot countries

• Is for pre 1990 engines

What does the "W" stand for in 5W30?

• Weight

• Winter

• Water

• Wet