Oil Viscosity Quiz

What organization is responsible for selecting the numbers that indicate oil viscosity?

• American Petroleum Institute

• Society of Automotive Engineers

• National Oil Corporation

• International Lubricant Association

What is the purpose of using multi-viscosity oils?

• To avoid seasonal oil changes

• To increase engine power

• To reduce oil consumption

• To improve fuel efficiency

What does SAE stand for?

• Society of Automotive Engineers

• Standard Automotive Equipment

• Society of Advanced Engineering

• Standard Association of Engineers

What is the significance of the second part of a multi-viscosity oil grade (e.g., 30 in 10W-30)?

• It defines viscosity at 212 degrees Fahrenheit

• It defines viscosity at 0 degrees Fahrenheit

• It defines the oil's boiling point

• It defines the oil's freezing point

What is the main advantage of using multi-viscosity oils in variable climate zones?

• Avoiding seasonal oil changes

• Increasing engine noise

• Decreasing engine efficiency

• Increasing oil consumption

What does the number 30 represent in SAE 10W-30 oil?

• Viscosity at 0 degrees Celsius

• Viscosity at 100 degrees Celsius

• Viscosity at 212 degrees Fahrenheit

• Viscosity at 150 degrees Celsius

What is the base rating of SAE 10W-30 oil when cold?

• 5

• 10

• 15

• 20

What is the high shear rate viscosity of SAE 60 oil at 150 degrees Celsius?

• 2.6 mPa.s

• 3.7 mPa.s

• 3.7** mPa.s

• 2.9 mPa.s

Which SAE viscosity grade has data unavailable for high shear rate viscosity?

• 30

• 20

• 25W

• 40

What is the main problem caused by oil becoming thinner at higher temperatures?

• It causes the engine to overheat

• It causes problems in engines operating over a wide range of temperatures

• It makes the oil more expensive

• It increases fuel consumption