Engines Chapter 12

Base stock makes up __________________ of engine oil.

• 75 to 85 %

• 70 to 80 %

• 80 to 90 %

• 50 to 70 %

Oil filters must be hot drained for _______________ before disposal.

• 12 hours

• 24 hours

• 8 hours

• 18 hours

Diesel truck engine oil pans could be made from all the following EXCEPT?

• cast iron

• aluminum

• stamped steel

• fiberglass

Class 7 and 8 trucks with a diesel engine will generally require ______________ oil.

• 15w40

• SAE 40

• 15w30

• SAE 30

All of the following are correct related to API classifications EXCEPT?

• A classification starting with a "C" is for diesel engines

• A classification starting with "S" is for gasoline engines

• A "S" classification is for synthetic oils

• API ratings determine if an oil is the right one for an engine

Viscosity index is defined as?

• the change in oils viscosity with temperature

• a comparison of viscosity at cold start up versus operating temperature

• a chart to choose the right oil for a particular climate

• An index to determine what oil thermostat rating to use for a cooler

Which of the following is true of oil additives?

• the necessary additives are added at the oil manufacturer's factory

• additional pour in additives extend engine life

• additional pour in additives increase horsepower

• oil manufacturer installed additives consist of different types of detergents

Additional pour in additives are promoted through all the following EXCEPT?

• customer testimonials

• additive company engineers

• additive company marketing

• engine manufacturers engineers

All of the following are true of synthetic oils EXCEPT?

• reduced general maintenance costs

• more prone to leaks

• possible increased turbo life

• less destructive during cold start up

All of the following are true of conventional oils EXCEPT?

• cheaper to purchase

• more viscous at cold temperatures

• contain a base stock made from mineral oil

• heavier for better turbo protection