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

• a. Additives

• b. Corrosion inhibitors

• c. Antifoaming agents

• d. Dispersants

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

• a. Cools

• b. Heats

• c. Solidifies

• d. None of the above

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

• a. Corrosion

• b. Antifoaming

• c. Extreme-pressure

• d. None of the above

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

• a. Mild

• b. Warm

• c. Hot

• d. Cold

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

• a. Italy

• b. France

• c. Britain

• d. 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?

• a. Technician A

• b. Technician B

• c. Both A and B

• d. 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?

• a. Technician A

• b. Technician B

• c. Both A and B

• d. Neither A nor B