Chapter 22 quiz A Oil

The purpose of the oil filter bypass valve is to ________.

• allow oil to bypass the filter if the filter becomes clogged

• keep the oil from draining out of the filter when the engine is shut off

• allows oil to bypass the oil filter when the oil is hot, to help cool the oil

• Both B and C

Which rating is the ACEA rating specified for use by many European vehicle manufacturers?

• SAE

• A3/B3

• SM

• GF-4

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

• binumeral

• 2-number

• multi-grade

• semi-grade

Older engines that use flat-bottom lifters should use oil (or an additive) that has enough ________.

• viscosity

• ZDDP (zinc)

• polyalpholefin (POA)

• diesters

Most high mileage oils cannot meet ILSAC GF-4 rating and are, therefore, ________ for use in most engines.

• highly recommended

• dangerous

• not recommended

• harmful

Technician A says that all high mileage oils are synthetic. Technician B says that synthetic and mineral oils are miscible. Which technician is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician

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

• higher

• lower

• equal

• none of these

Technician A always inspects or replaces the drain plug gasket when performing an oil change. Technician B says that warm oil holds contaminants and flows faster than cold oil. Who is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician

Using the incorrect multi-grade oil can cause the check engine light to come on.

• True

• False

Two technicians are discussing oil filters. Technician A says that the oil will remain perfectly clean if just the oil filter is changed regularly. Technician B says that oil filters can filter particles smaller than the human eye can see. Which technician is correct?

• Technician A only

• Technician B only

• Both technicians

• Neither technician