Engine Lubrication Flashcards
Oil oxidation can create [blank] deposits.
a. Gum
b. Sludge
c. Acid
d. Varnish
d. Varnish
Motor oil does NOT:
a. Help cool the engine
b. Affect NOx emissions
c. Reduce friction
d. Help seal the combustion chamber
b. Affect NOx emissions
The tendency of a liquid to resist flow is called its:
a. API rating
b. Additive package
c. Viscosity
d. Liquidity
c. Viscosity
A 1968 engine should use service classification motor oil:
a. SD
b. SJ
c. Either a or b
d. Neither a nor b
b. SJ
Antioxidant additives in motor oil:
a. Reduce varnish deposits
b. Clean piston ring grooves
c. Improve viscosity at high temperature
d. All of the above
a. Reduce varnish deposits
Dispersant additives in motor oil:
a. Reduce varnish deposits
b. Reduce the formation of sludge
c. Clean piston ring grooves
d. All of the above
b. Reduce the formation of sludge
A synthetic motor oil:
a. Is at least partly petroleum based
b. Deteriorates more slowly than a conventional petroleum oil
c. Both a and b
d. Neither a nor b
c. Both a and b
Most V8 engines in cars hold [blank] litres of oil.
a. 3 to 4
b. 4 to 6
c. 7 to 8
d. None of the above
b. 4 to 6
The road draft tube:
a. Ventilates the crankcase
b. Adds to air pollution
c. Has been replaced by PCV systems
d. All of the above
d. All of the above
Oil pumps:
a. May be driven by the crankshaft
b. Contain an inner gear and an outer gear
c. Carry oil from a large to a smaller area to create pressure
d. All of the above
d. All of the above
The oil pressure relief valve:
a. Limits the maximum engine oil pressure
b. Routes excess oil to the oil pump inlet
c. Is usually built into the oil pump inlet
d. All of the above
d. All of the above
Spin on oil filters:
a. Are used only on older engines
b. Are made of wire mesh
c. Can be cleaned and re-used
d. None of the above
d. None of the above
An oil drill way through the crankshaft:
a. Lubricates the rod bearings
b. Lines up with holes in the connecting rod to spurt oil into the cylinder
c. Both a and b
d. Neither a nor b
c. Both a and b
All engine dipsticks have marking that show:
a. The recommended SAE grades for the engine oil
b. The maximum and minimum recommended oil level
c. Both a and b
d. Neither a nor b
b. The maximum and minimum recommended oil level
Using oil with a viscosity higher than recommended will:
a. Provide inferior lubrication
b. Cause no problem at all
c. Increase horsepower
d. Increase oil consumption
a. Provide inferior lubrication
Using oil with a viscosity lower than recommended will:
a. Provide inferior lubrication
b. Cause no problem at all
c. Increase horsepower
d. Increase oil consumption
a. Provide inferior lubrication
When inspecting a gear type oil pump, you need to measure:
a. Gear to gear clearance
b. Gear to housing clearance
c. Both a and b
d. Neither a nor b
c. Both a and b
You will need a [blank] to measure clearance on a crankshaft driven rotor type oil pump that mounts in the timing cover.
a. Straightedge
b. Feeler gauge
c. Depth micrometer
d. All of the above
d. All of the above
Viscosity:
a. Goes down with lower temperatures
b. Goes up with lower temperatures
c. Changes very little with temperature changes
d. Changes with each API rating
b. Goes up with lower temperatures
Oil coolers are used on some cars:
a. To reduce operating pressure of the engine under severe conditions
b. To reduce operating temperature of oil during severe engine operation
c. To cool the turbocharger
d. To reduce oil viscosity
b. To reduce operating temperature of oil during severe engine operation
Crankcase oil should be at least warm before it is drained so that:
a. Contaminants will be mixed with the oil and drained out with it.
b. Engine parts will be well lubricated before oil is drained.
c. The oil will flow into the drain pan faster.
d. The engine will start more easily when the new oil is added
a. Contaminants will be mixed with the oil and drained out with it.
The four jobs that engine oil must do in an engine are to seal, lubricate and:
a. Clean and heat
b. Clean and circulate
c. Cool and clean
d. Cool and insulate
c. Cool and clean
On a full flow filtration system, the oil, after passing through the filter, goes to the:
a. Oil galleries
b. Valve cover
c. Camshaft lobes
d. Crankcase
a. Oil galleries
If a full flow oil filter element becomes so clogged that all the oil needed by the engine cannot pass through the filter,
a. The oil filter bypass valve opens allowing oil from the pump to bypass the filter and to the engine.
b. The engine is seriously damaged.
c. The oil pressure relief valve closes, raising the oil pump pressure and increasing the flow.
d. It is bypassed and flows back to the crankcase.
a. The oil filter bypass valve opens allowing oil from the pump to bypass the filter and to the engine.
Oil filters should be changed:
a. Every oil change
b. Every other oil change
c. Only if the oil is very dirty
d. If the customer is willing to pay for it
a. Every oil change
Friction between moving parts causes both wear and heat.
a. True
b. False
a. True
Oil plays no part in cooling the engine.
a. True
b. False
b. False
Oil additives cannot create a property that the oil did not naturally have.
a. True
b. False
b. False
When oxygen combines chemically with hot oil, sludge is formed.
a. True
b. False
b. False
Blowby gases contain acid and water vapour.
a. True
b. False
a. True
Foam-inhibiting additives are used in small amounts only since they tend to reduce the lubricating ability of the oil.
a. True
b. False
a. True?
The API rates engine oil by its performance in a test engine.
a. True
b. False
a. True
Oils for use in late-model gasoline engines should carry an SM rating.
a. True
b. False
a. True
A thin oil that flow easily has a high SAE viscosity number
a. True
b. False
b. False
If an engine will be used under widely varying temperatures, a multi-grade oil should be used.
a. True
b. False
a. True
Synthetic oils are not derived from a petroleum base.
a. True
b. False
a. True?
Oil in the sump can be cooled by flow past the engine.
a. True
b. False
a. True
Most engines require 8 to 9 quarts of oil.
a. True
b. False
b. False
The crankcase is pressurized by the oil pump.
a. True
b. False
b. False
Road draft tubes are commonly used on late-model engines.
a. True
b. False
b. False
Gera-type oil pumps are often driven by the camshaft.
a. True
b. False
a. True
The pressure relief valve keeps a clogged oil filter from blocking oil flow.
a. True
b. False
b. False
Rotor type oil pumps can be shaft or crankcase driven.
a. True
b. False
a. True
If the oil pressure relief valve is installed backwards, the engine will have excessive or little oil pressure.
a. True
b. False
b. False?
A non-hardening gasket sealer should be used to seal the oil pump end housing.
a. True
b. False
b. False
