Lubrication systems review 1

Many oils are identified by two numbers (i.e. 10W-30). These types of oil are referred to as ________ oils.

• 2-number

• Semi-grade

• Binumeral

• Multi-grade

Engine oil additives are designed to break down.

• True

• False

The "W" in SAE 5W-20 means ________.

• Without

• Weight

• Winter

• With

Oil with a high viscosity has a ________ resistance to flow than oil with a lower viscosity.

• Lower

• Higher

• Equal

• Smaller

Lower than specified oil pressure is measured on an engine. What could be the cause?

• Excessive main bearing clearance

• Seized oil pressure regulator spring

• Main bearing clearance that is too tight

• Plugged oil gallery

An engine oil cooler usually uses ________ to cool the oil.

• Air

• Air conditioning evaporator output

• Automatic transmission fluid after it flows through the radiator

• Coolant

What type of oil filtration systems exist on modern vehicles?

• Full flow

• Crenellation flow

• Partial flow

• Unfiltered

What is the reading? (0" - 1" micrometer)

• .1554

• 1.1554

• .1754

• .1540

What is the name for the wedging action that forms between two surfaces separated by an oil film?

• Hydrodynamic lubrication

• Boundary lubrication

• Particle lubrication

• Assisted lubrication

The oil pressure relief valve controls ________ oil pressure in the lubrication system.

• Maximum

• Nominal

• Minimum

• Average