Diesel Engine Lubrication Systems Quiz

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 "SAE" stand for in the API Service Symbol?

• Society of Automotive Engineers

• Standard Automotive Equipment

• Service and Engine

• Society of Engine Experts

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

What does the "SAE 30" in the API Service Symbol represent?

• The oil's viscosity grade

• The oil's certification level

• The oil's brand

• The oil's price

Which API standards are included in the global standard for engine oil for diesels?

• A) DLD-1, DLD-2, DLD-3

• B) DLD-4, DLD-5, DLD-6

• C) DLD-7, DLD-8, DLD-9

• D) DLD-10, DLD-11, DLD-12

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

Which of the following statements is true about SAE 50 oil?

• It has a lower viscosity rating at high temperatures compared to SAE 20W/50

• It is a multigrade oil

• It has a higher viscosity rating at high temperatures compared to SAE 20W

• It is suitable for use in cold climates

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