Exam 12: Engine Lubrication

SA and SB graded oils are good only for very light-duty applications and are obsolete for automotive engines, although they are sometimes found on market shelves.

Today's passenger cars use the ____________________ oil filter system.

While having a discussion, Technician A says that A multi-vis oil helps combat engine wear because it flows more quickly to the bearings when the engine is first started. Technician B says that multi-vis oil actually accelerates engine wear. Who is correct?

What are the advantages of changing engine oil?

While having a discussion about O-rings at the bottom of filters, Technician A says that the Automotive Filter Manufacturer's Council recommends that the filter's O-ring be lubricated with oil after installing the filter. Technician B says that the filter's O-ring should be lubricated before installation. Who is correct?

How is the viscosity of a liquid determined?

____________________ and dispersants are added to oil to keep small particle contaminants suspended in the oil

Viscosity, which is measured at 212F (100C), is lower if the oil is thicker.

As an engine wears, clearance between its crankshaft and bearings decreases.

Since ____, no oils can display the starburst symbol unless they meet GF-4 standards.

Aerated oil can be compressed, which can result in collapsed hydraulic lifters, or even a broken crankshaft.

All of the following statements are true EXCEPT:

The ____________________ is the area at the bottom of the engine enclosed by the oil pan. If there is too much oil in the crankcase, the crankshaft can dip into the oil as it spins.

The by-pass valve on most passenger car oil filters will open when resistance to flow reaches about ____.

Oil normally thins out when heated.

What factors should you bear in mind when checking the engine oil level?

List five additives found in engine oil.

Under what circumstances would the by-pass valve open to let the unfiltered oil flow to the engine?

All of the following are parts of a pleated oil filter EXCEPT:

Which of the following is LEAST-Likely to be one of the materials used to create a by-pass filter?