Engine Oil additives

What is the difference between oil additives and anti wear additives?

Oil additives improves the lubricant properties of base oil. What is meant by a base oil?

• Oil formed from distillation that have desired properties for a certain use.

• Oil that contains only the most basic chemicals in it

• The most simplest version of the oil

• The oil that is alkaline in nature

What should the viscosity of the engine oil be when the vehicle is first started?

• Cold

• Hot

• Low

• High

Polymeric viscosity index improver molecules will ____________ when lubricating oil is hot to increase the internal friction causinf fluid to flow at a slower rate.

• Stretch out

• contract

• polymerize

• degrade

What does pour point mean?

• The temperature below which the liquid will not flow

• The temperature above which the liquid will not flow

• The temperature below which the liquid will start flowing

• The temperature above which the liquid will not pour

What is the chemical that can affect the pour point of lubricating oils?

• Wax

• organo-polysulphides

• organo-polyphosphates

• dithiophosphates

Which of the following can oxidize the engine oil faster? (More than 1 answer)

• High temperature

• High pressure

• High friction

• High metal concentration

How does anti-corrosives work? (more than 1 correct answer)

• Using high alkaline materials to neutralize acidic materials

• Using high acidic materials to neutralize alkaline materials

• Adsorb to metal to form of protective layer

• React with metal to form a less reactive form that will not corrode.