Car engine oil is like a boon for your engine. How? Imagine, feeling dehydrated, and getting water suddenly. Won’t that charge you up? Of course, it will, and so does the oil would do to your car engine. Some drivers, despite being professionals or well-experienced, do not pay much attention to changing the oil. They might pay for high-quality fuel and services, but don’t bother to have a quick check on their oil’s condition.
And as an outcome, they face complications in running their cars. So, if you want to lubricate all the running parts of your car, as well as, your engine’s main components, which are exposed to tremendous temperatures, then motor oil is what you need. Likewise, it is also required to clean the internal mechanism of your car’s engine that gets severely damaged due to continuous movement.
How Motor Oil Works?
Furthermore, the oil keeps the engine clean, allowing your car to run smoothly. Car oil improves the fuel mileage, eliminates sludge that causes obstacles. And last but not the least, it saves the internal metal parts of the engine. So whenever you’re selecting a good motor oil, try to get the best car oil only.

Many people are conscious about the choice of motor oil for their car’s engine just like they are conscious about the food for their stomachs. Well, if you know what important role car oil plays for the health and performance of the car engine then being conscious about it is obvious.
Here is a complete list of the best car oils for the high mileage and performance of your engine.
Best Car Oil Buying Guide & FAQ
Motor oil plays an important role in maintaining the temperature, lubrication, and keeping the engine clean. Without it the engine can’t work even for a minute. It’ll heat up and cause wear and tear of the parts. So keeping its usage in mind we must have to check it regularly and change it after some intervals.
What Type Of Oil Does My Car Take?
Car oil comes in various viscosities. It should be thin enough to cold starts and thick enough to deal with hot engines. Automakers recommend different motor oil types for different cars. Every engine demands motor oil with different thickness and thinness. Motor oil gets thin when heated and it gets thick when cooled.

If your car is a modern one, the engine may use a 5W 30 or 5w 40 motor oil. These car oils are thinner and turn over the car engine more conveniently. Thinner motor oil aids fuel consumption too. The oil circulates around the engine more quickly. If you own an older car, these oils are not for your car. The engines of these cars work with 10W 40 or 10W 30 motor oil. So do you run a high mileage car? Has your car had over 100,000 miles? If so, then go with 20W 50 motor oil.
How To Check Engine Oil Level?
- When the engine is cooled, pull out the dipstick,
clean it on a rag

- If it doesn’t come out and stuck, insert it back
in the pipe - Now, take the dipstick out again
- Note how high the oil film reaches on the dipstick
- Check the condition of the oil

- Put the dipstick back.
You can check it once a month, but if you drive a lot then check it weekly. It is recommended to check motor oil in a cool engine. But always consult the Owner’s Manual to know the features and conditions of your car engine.
What Happens If You Put too Much Motor Oil in Your Car?
If one adds too much motor oil to the car engine, what would happen? Engine damage. Oil capacity in an engine is limited. Too much oil in the car would increase pressure on the crankshaft. Car oil can enter the combustion chamber and it would block the suction house. So, be concise and careful about oil capacity. The process should do in time to time.
Motor oil cools down your engine. It provides lubrication. So it is important to choose good motor oil types and high-class motor oil brands. It affects the overall performance of engine. Cheap and old motor oil will not do that wonder. Dirty motor oil would lead your car towards damage. So, the good the quality, the better would be the outcome.
How is Motor Oil Classified?
This ‘w’ defines the viscosity or flow of oil at colder temperatures. So, the first number deals with cold-weather oil viscosity. Hence, if the number is low, oil viscosity is low too. It means that cold start performance would be up to the mark. Let’s jump into an example for further understanding. It is written as 10W-30 or 10W-40.

The second part tells about the oil thickness or oil viscosity. Therefore, 10W-40 would have high oil viscosity than 10W-30. For more examples, see below: We can see that the second parts of both are the same. The only difference is that their cold flow abilities are different. 10W-30 would move slower than 5W-30. It is so because 5W-30 is a multigrade oil. 5W-20 is thicker and less viscous than 5W-30.
The more viscous motor oil, the more it would resist the heat. Therefore, 5W-30 provides good overall protection. This 10W-30 is used in vehicles that carry heavy luggage or loads. This works as an all-rounder. It helps in starting engines in cold weather as well as it works best in hot temperatures.
Its viscosity is 10W when the engine is cold and 30W in a hot engine. It is made for over-the-road diesel trucks, farm tractors, light trucks, high-way diesel equipment. It meets the requirements of diesel engine manufacturers. 15W-40 works for older engines and high sulfur fuels.
Let’s go through the differences and similarities of Synthetic Engine oil vs Conventional Engine oil. Synthetic engine oil is way much better than conventional. But it would be no harm to the engine while switching off and on between these oils. Synthetic oil gives better protection to the engine. It also has few impurities.
Similarities:
- Both of these oils are derived from refining oil.
- Main source of these oils is refined crude oil
- These are pumped from deep underground
Differences:
- The level of refinement; synthetic oil is more refined
- Different molecular size
- Conventional oil breaks down more quickly than Synthetic oil
In a nutshell, synthetic motor oil is better than conventional oil. Synthetic oil flows better and lowers the risk of sludge. Now, many modern vehicles have a feature that requires synthetic oil. Synthetic oil is a lubricant. It is made up of artificially made chemical compounds.

The base material that creates synthetic oil is always distilled crude oil. It contains fewer contaminants. So this lowers the risks of engine sludge and buildup. It is actually more expensive than conventional engine oil. Synthetic oil gives more protection to your car. Hence the life of the engine is prolonged.
So you love your car, but do you even care about its hydration? Hydration in terms of lubrication, which is surely a prerequisite for a stable engine. And what could be any other best way to quench your engine’s thirst by offering it some of the best motor oils.
What Is The Best Synthetic Oil?

Benefits of Synthetic Oil:
- Synthetic car oil flows swiftly and quickly even in chilly and snowy weather
- It prevents loss of prime when oil gets cool
- Synthetic oil decreases evaporative loss
- In some engines, it improves fuel economy
- Also, it prolongs engine life
Summary
For sure, motor oils are manufactured to keep your engine in fine condition. So there’s no way you could ignore checking or changing the motor oil whenever. It is required, otherwise, you might damage some important internal parts of the engine. Especially the motor along with several other necessary components.
And the most common one the seized engine. Similarly, there could be several other mechanical failures your car would encounter if you fail to provide an adequate amount of motor oil for lubrication purposes.
Also, it is important to understand that choosing a low-quality oil makes no difference in the engine’s performance, but makes the situation worse by producing stubborn sludge that decreases your car’s efficiency.