________ help stop acids that cause corrosion from forming, especially on bearing surfaces.

• Additives

• Corrosion inhibitors

• Antifoaming agents

• Dispersants

The lubricating oil collects heat from the engine’s components and then returns to the oil pan, where it ______.

• Cools

• Heats

• Solidifies

• None of the above

_______ additives coat parts with a protective layer so that the oil resists being forced out under heavy load.

• Corrosion

• Antifoaming

• Extreme-pressue

• None of the above

Pour point depressants keep oil from forming wax particles under _______ temperature operation.

• Mild

• Warm

• Hot

• Cold

Synthetic oils were developed in _______ during World War II due to the lack of crude oil.

• Italy

• France

• Britain

• Germany

Technician A says that API's "S" rating means it should only be used in supercharged engines. Technician B says that C rated oil is certified for use for cars, and not trucks. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Low-viscosity liquid is thin and flows easily.

• True

• False

The oil pump may be driven by the crankshaft or by the camshaft.

• True

• False

The oil sump's small external surface area helps heat transfer from the oil to the outside air.

• True

• False

Technician A says that spin-on oil filters use a square-cut rubber O-ring to seal the base of the filter to the engine block. Technician B says that some oil filters use a replaceable paper filter cartridge. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B