- 3/10/2025
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What is engine oil?
Engine oil is the liquid responsible for lubricating the moving parts of the engine to facilitate their movement, preserve them from heat and keep them within the operating temperature of the engine along with the cooling system.
Engine oil is usually made using a combination of chemicals and natural substances, as it is made either from petroleum, synthetic chemicals, or a mixture of the two, and these substances are responsible for lubricating the moving parts of the engine and removing the heat accumulated in it.
Engine oil also contains synthetic chemical additives whose percentage varies according to the type of oil, and these substances are responsible for precisely controlling the oil viscosity and lubrication efficiency in addition to protecting engine parts from corrosion.
Read more: How do I choose the right engine oil for my car?
There are many types of oil, whether fully synthetic or semi-synthetic, and these types have viscosity numbers for cold and high temperatures or the operating temperature at which the engine will provide its best performance, and the viscosity numbers are as follows: 5W-20, 5W-30, 10W-40 and many others.
Each car needs specific viscosity numbers recommended by the car manufacturer, because each engine is suited to specific viscosities in order to provide the best performance and fuel efficiency, and if you put the wrong oil in your car, the engine's performance will weaken and fuel consumption will increase.
The cars that Motorgy offers you are used cars for sale in Kuwait with a comprehensive technical inspection of all important parts, including the engine, so that you can familiarize yourself with its condition and the condition of the oil used in it before buying, so that you can choose the right car for you with peace of mind.
Read also: What do engine oil numbers mean?
What is the importance of engine oil?
As for the importance of engine oil, it is numerous, and you will learn about it below:
Lubrication
The main function of engine oil is to lubricate its internal moving parts that are exposed to constant friction, if lubrication contributes to reducing the friction between them and this works to prevent wear and prevent overheating, and the better the quality of the oil, the more efficient the lubrication process will be and this will maintain engine performance and fuel consumption as well.
Cooling
It is known that friction between parts generates heat, as you do when you rub your hands together, and if this heat rises too much, it will damage some parts, and may even damage the entire engine, and here comes the role of the oil in withdrawing heat from these parts and dissipating it next to the cooling system of course, then the oil will cool when it descends to the lower bowl in contact with the external air and then returns to withdraw heat again from the engine to maintain its correct operating temperature.
Corrosion protection
The combustion process inside the cylinders and the very fast friction between the parts leads to the wear of some of the basic components of the engine, and for this, well-known oil manufacturers work to add substances in the oil that reduce and slow down this wear, but on the other hand, the oil may oxidize over time and lose its ability to lubricate and slow wear, and here you must change it immediately in order to maintain the engine.
Cleaning dirt and debris
You may be surprised by this big task of engine oil, as it also works to clean the engine from sediment, metal filings, dirt and residues of the combustion process that accumulate inside it, as the oil works to pull this dirt and introduce it to the oil filter to stay in it and keep the engine clean, and for this you must change the oil filter every time you change the engine oil.
Read also: What Happens If You Don't Change Your Engine Oil?
Insulation
Good quality oil works to seal the engine components more and more by filling the spaces between the areas where the parts are connected to each other, and more specifically sealing the pistons, cylinders and valves, as the oil works to form a protective layer between the various parts, which leads to sealing any clearance or void that may arise in them later.
Maintains the engine
When oil reduces friction between engine components that rotate and rub against each other at very high speeds, this contributes to extending their life and thus preserving the engine for a longer period of time, and the better quality oil the less friction, so it will preserve the engine better than poor quality oil types.
Deliver the best performance
An engine with good lubrication is sure to perform better than an engine with poor lubrication or with improper or poor quality oil; because the correct lubrication will ensure better friction and optimal heat, all of which will reflect on the performance positively, and you will feel it while driving.
Maintain fuel efficiency
As we mentioned in the previous point, but you should know that better performance comes with fuel consumption within the normal range, because the engine is working comfortably and within the correct and natural friction, but it will work extra hard when it is supplied with unsuitable or poor quality oil or is old and needs to be changed.
