0
The oil pump pushes oil through passages that end up in bearings and other components. The pressurized oil leaks out past small openings around the bearings, and as the bearings wear out the openings become larger.
When the oil is cold it is thicker and when the oil is warm it becomes less "viscous", yet the oil pump continues to pump the same volume of oil. Thicker oil leaks past the openings around the bearings a little more slowly.
When the engine is running faster the oil pump is also turning faster, and moving more oil through the passages. Yet the oil still leaks past the bearings at the same rate.
In other words, if your engine is getting worn, change the oil to a higher viscosity (higher numbers, ie, If you're currently using 5W15, change to 10W30 or even 15W50 if necessary).
If your engine isn't quite as new as it once was, changing to a heavier (higher viscosity) oil can give you a LOT more miles.
What else can I help you with?
Above the bubble-point pressure the oil formation volume factor increase or decrease?
Above the bubble-point pressure, the oil formation volume factor decreases. This is due to the expansion of gas released from the oil as pressure decreases, causing the volume of oil to increase for a given mass.
What will cause oil viscosity to decrease?
Factors that can cause oil viscosity to decrease include an increase in temperature, shearing forces from mechanical stress, contamination by fuel or other solvents, and oxidation or degradation of the oil over time.
When oil is heated its volume increases as a result of?
When oil is heated, its volume increases due to thermal expansion. This is because the heat causes the oil molecules to move faster and spread out, leading to an overall increase in volume. Additionally, the expansion of the oil can also be attributed to the decrease in its density as it becomes less dense when heated.
How much does oil expand when it gets hot?
Oil expands about 0.07% for each degree Celsius increase in temperature. This expansion can lead to changes in volume, pressure, and viscosity in the oil.
Why does the idle speed decrease on an 2001 intrepid after it is warmed up causing the oil light to flicker while idleing?
The idle speed decreases to a set point as the engine warms up naturally. The engine when cold needs more fuel than air to stay idling. As the engine temp rises it tells the computer to cut back on the fuel and when it does it lowers the idle rpms. It is a natural thing. If your oil light is out when the engine is cold and idling, and then comes on when the engine becomes warm, you may have an engine oil problem. First check the level of engine oil aftre the engine has been sitting for more than 15 mins. If it needs oil, then add it. You check it using the dipstick, pulling it out, wiping it off and reinserting it and checking the level. If you have enough oil, then you have an oiling problem as far as pressure. The warmer the engine gets, the thinner the oil gets. Thinner oil gives you lower oil pressure at idle. Your oil pump may also be going out, or you may need an overhaul on the engine at the crank. The tolerances where the oil flows inside the engine get larger as the engine ages with miles and uses. This is why it is important to use quality oil but most of all change it as recommended with the filter. You may want to try a thicker oil as a band aid to help the oil pressure but this is only a temporary fix. Eventually the engine will need an overhaul if the bearing surfaces wear out. If you are using an oil with a weight of 5-20, try a 10-30. If you are using a 10-30 try a 10-40. I wouldn't suggest a 20-50 oil since this is a very heavy oil viscosity that is not primary used in todays engines. It is mostly a racing oil. So check the engine oil level, try a little heavier oil weight, start saving for an overhaul. Low oil pressure is a sign an engine needs help beit a new oil pump, a new oil pressure sending unit (the sending unit could be at fault sending you a false oil pressure warning) and alas.....an overhaul. If the engone idle is falling to lower than normal rpms causing the oil light to ome on, then your tps, throttle position sensor may be going bad. It may be telling the computer the car is idling at 800 when in reality it is idling at 500 and throwing the engine oil light to come on. Determine if it is an oil pressure problem, a gauge problem, a tps sensor problem While the engine is cold the idle speed is increased to keep it from stalling. If the oil light comes on once the engine warms up, you probably have worn main/rod bearings. Switch to a heavier grade oil. If you're using 5W15, switch to 10W30 or even 15W50. Use the lowest number oil possible to get the light to stay out. Typically, low oil pressure is caused by worn bearings, but of course there can be other causes for what you're seeing, such as a faulty sensor or worn oil pump, but the problem is ALMOST ALWAYS worn bearings. On the 2.7L DCX engines (esp. 1998-2004 models), when at normal operating temperature the oil light flickers because of excess PSI on the oil pressure sensor. The oil pressure sending unit is right below the exhaust manifold, and at normal op. temp. the heat causes excess pressure behind the switch giving a false reading. The TSB for this issue is to install the vent wire accessory onto the pressure sending unit's spare plug hole to relieve the pressure. You should have your oil pressure checked before hand though to rule out a blocked oil pump pick up tube or worse problems. Chrysler recommends 5w30 synthetic for regular changes at 2500mi.
Which is most consistent with the law of demand?
An increase in the price of heating oil causes a decrease in the quantity of heating oil demanded.
Above the bubble-point pressure the oil formation volume factor increase or decrease?
Above the bubble-point pressure, the oil formation volume factor decreases. This is due to the expansion of gas released from the oil as pressure decreases, causing the volume of oil to increase for a given mass.
''Rising oil prices have caused a sharp decrease in the demand for oil.'' Speaking precisely and using terms as they defined by economists choose the statement that describes this quotes?
The quotation is incorrect: An increase in price causes a decrease in the quantity demanded, not a decrease in demand.
What is opposite of 0.25 cents oil price increase?
The opposite of a 0.25 cent oil increase is a 0.25 cent oil decrease.
What causes the oil pressure gage to show 100 and above on a big truck?
High oil pressure or a faulty oil pressure gauge.
What causes the lifters not to oil properly?
Not enough oil pressure and / or the oil channel is plugged
What causes oil to come out the filler tube or the dip stick?
Too much oil, excessive crankcase pressure ( bad piston rings ) or both. pressure causes oil to come the filter tude and capilarity is also a factor. pressure causes oil to come the filter tude and capilarity is also a factor.
What causes my oil pressure to drop in 1992 Dodge Dakota?
Not enough oil.
What causes low oil pressure in a cummins isx?
Compromised oil system, faulty engine oil rifle pressure 1 sensor.
WHAT CAUSES LOW OIL PRESSURE IN ISX CUMMINS?
Compromised oil system, faulty engine oil rifle pressure 1 sensor.
What causes low oil pressure in a Chevy Tahoe?
One of the causes for low oil pressure in a Chevy Tahoe could be a clogged or dirty oil filter. Changing the filter may get rid of the problem.
What causes your oil light to pop on And itz full of oil?
Low oil pressure. Such as a bad oil pump.
