Chapter 45 Lubrication

Lubricating oil that is used in engines is made by refining:

• mineral oil.

• ground oil.

• crude oil.

• rig oil.

Which of the following is NOT a function of lubricating oil?

• cool

• clean

• seal

• burn

The measure of how easily a liquid flows is called its:

• flow-ability

• viscosity.

• elasticity

• polymer

The main function of motor oil is to reduce ________ between moving parts of the engine.

• Friction

• movement

• viscosity

• cooling

The additive found in oil that minimizes the formation of air bubbles in the oil is called a(n):

• anti-foaming agent.

• pour point depressant.

• dispersant.

• viscosity index improver.

The oil additive that keeps oil from gelling under cold temperatures is called a(n):

• anti-foaming agent.

• pour point depressant.

• dispersant.

• viscosity index improver.

The oil additive that helps reduce the change in the oil's ability to flow as the temperature of the oil changes is a(n):

• anti-foaming agent.

• pour point depressant.

• dispersant.

• viscosity index improver

Most oil pumps are the ___________ displacement type.

• forward

• positive

• negative

• none are correct

The passages that oil passes through to get to different parts of the engine are called oil:

• galleries.

• tubes.

• flows.

• spurt holes.

How often should the oil in a vehicle be checked?

• Every month

• Every time you fill your gas tank

• annually

• at each oil change interval