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Changing the Engine Oil in Your Car

An air warrior, MG has a checkered and owns a string of cars including Mustang and BMW



A car is a utility as well as a luxury in the modern world. It runs on a four-stroke engine invented about 150 years back. All engines have a number of metallic moving parts. As the moving metallic parts operate, they generate heat through friction, which in turn leads to wear and tear and degeneration. To avoid this friction and degradation of the moving parts, the engine has to be fed a certain quantity of lubricant known as engine oil to lubricate the moving metallic parts. The engine oil is supplied to the moving parts through a pump that pumps the oil from a crankcase.

Over a period of time, the oil loses its viscosity and needs to be changed. This is essential to keep the engine healthy and working at an optimum level.


Role of oil

The oil is pumped through a filter which cleanses the oil that is being pumped to the engine. The filter is a device in a car that filters the solid particles that enter the oil stream. The significance of the engine oil in operating an engine cannot be underestimated as the engine oil helps lubricate the moving metallic parts and thus increases the life of the engine. In case no oil was available the moving parts would generate great heat, resulting in engine seizure.

Engine oils come in specific grades and have a number. This number refers to the viscosity of the oil and generally, different car engines will need different grades of oil. A few common viscosities include 0W-20, 5W-30, 10W-40, and 20W-50
it is important to use the correct grade of oil for your car engine. To get an idea as to which engine oil is required for the car, it is important to examine the specifications in the operating manual of the car. All cars will have an operating manual that will guide an owner as to which engine oil to use.

Engine oil used in a car over a period of time loses its viscosity and thus needs to be changed. The operating manual will guide a car owner as to the period and mileage after which a recommended oil change must be carried out. Earlier it was considered mandatory to change the oil after 3000 miles. But this figure is no longer valid and modern engine oils need not be changed up to 7500 miles.


Changing the oil

Earlier a mechanic would advise when the engine oil of a car is to be changed. Many a time a mechanic will advise engine oil to be changed if it becomes black in color. It must be understood that mere change of engine color to black does not mean the engine oil change is due. Almost all engine oils become black after some use, but in case the viscosity of the engine oil is ok, there is no need to change the oil.

Oil when it is pumped to the engine from the sump flows through an oil filter. This is an important part of the lubrication of the engine. The oil filter has small holes that filter the impurities and dirt that accumulate with prolonged use of the engine. Over a period of time, the filter becomes clogged and needs to be changed. It is recommended that an oil filter be changed and a new one fixed along with every oil change.

The last step is changing the engine oil. This is simple and can be done either by the mechanic or by the car owner at his home. It involves loosening the nut of the sump which is at the bottom of the engine. The oil cap is also removed and the oil allowed to drain out in a trough. The new engine oil is poured in through the oil inlet. A dipstick which is located at the top will tell an owner as to the level of oil in the car.

An oil change is always done when the car engine is cold. It should not be done when the engine is hot after a long run. Care must also be taken that the car is parked on a flat surface and not on an incline. Regular change of engine oil as per the manufacturer’s recommendations will enhance engine life.


  1. Step 1: Jack the car up. Lift the car high enough to give yourself room to work under it.
  2. Step 2: Remove the nut at the bottom and let the oil inside drain out.
  3. Step 3: Remove the Old Filter. It's an easy enough step.
  4. Step 4: Refix drain Plug and new filter.
  5. Step 5: Pour the oil from the opening on the top.
  6. Step 6: Check the Oil Level with the dipstick
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The entire process should take you about half an hour and you have the satisfaction of a job well done.


MG Singh emge (author) from Singapore on June 13, 2021:

Thank you Pam, so nice you commented. Yes, you could try it, the first time it could be messy but will iron out the next time.

Pam Morris from Atlanta Georgia on June 13, 2021:

What a helpful article. I never thought of changing my car oil. I have always taken my car to a shop where a person will do it for me. But after reading this article, well, who knows I might consider trying. Thank you for sharing this hub!

MG Singh emge (author) from Singapore on June 13, 2021:

Thank you, Bill, so happy you change the oil of your truck. This is great news. I know a few including me who change the oil in cars but not in a truck.

MG Singh emge (author) from Singapore on June 13, 2021:

Rawan Osama, thank you for sparing time and commenting.

Rawan Osama from Egypt on June 13, 2021:

Well written . Thank you for sharing this useful article!

Bill Holland from Olympia, WA on June 13, 2021:

It's amazing to me how many people don't know how to do this. I still do it with my truck. It's something I learned as a teen, and it gives me a little bit of pride knowing I can still do it. :)

MG Singh emge (author) from Singapore on June 13, 2021:

Thank you Desmond, for commenting and appreciating.

Desmond Hayes on June 13, 2021:

Nice reading MG, you made it so simple and gives me encouragement to try it myself the next time.

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