Lubrication System Flashcards
Synthetic oil molecules are all the same size.
True’.
Technician A says a windage tray helps to keep air pockets out of the oil at high speeds. Technician B says the lubrication system should be primed before starting an engine that has just been rebuilt. Who is right?
Both technicians
Technician A says pleated paper is generally used in bypass oil filters. Technician B says a relief valve that is stuck closed will result in high oil pressure at idle. Who is right?
Both technicians
Viscosity is a term used to describe the thickness or body of engine oil.
True’.
Excessive clearance at a main bearing will result in low oil pressure at the rocker arms or valve lifters.
True’
Since the early 1960s, road draft tubes have been used to replace PCV systems.
False
Technician A says leaking vacuum lines can allow dirt to be drawn into an engine. Technician B says a horizontally mounted oil filter has an antidrainback valve. Which technician is correct?
Both technicians
Technician A says most manufacturers recommend a minimum of 25 psi of oil pressure for every 1000 rpm. Technician B says short trips allow sludge to accumulate. Who is right?
Technician B
Technician A says when oxygen is mixed with oil, it will extend the life of the oil. Technician B says excessively rich air-fuel mixtures can turn the oil black. Which technician is correct?
Technician B
Oil is being discussed. Technician A says oil never wears out. Technician B says there are many additives in oil that will become depleted during engine operation. Who is correct?
Both technicians
What does SAE stand for?
Society of Automotive Engineers
Technician A says additive packages make up as much as one-third of the volume of a container of oil. Technician B says friction modifiers added to oil help the oil to stick to metal surfaces. Who is right?
Technician A
An oil is rated at 10W-40. The “W” means winter grade.
True’.
Technician A says too much oil can cause excessive oil consumption. Technician B says to much oil in the crankcase can cause aeration of the oil. Who is right?
Both technicians
Technician A says the primary job of antiwear additives is to protect the camshaft and lifters. Technician B says ZDDP has been commonly used as an antiwear additive. Who is correct?
Both technicians
