Best Synthetic Oil for Protecting Your Engine

You have two available options when you have the need to buy lubricant for your engine: Synthetic oil and Conventional oil. As we know, conventional oil is just crude oil or by-product of crude oil. On contrast, synthetic oil is a chemically modified petroleum product. We will show the best synthetic oil we tested below. Synthetic oil performed well in making your vehicle run smoothly and keep it in good condition. Therefore, if you care about your engine’s health, if you want to increase the service life of your car’s engine, if you have been tired of using conventional oil, synthetic oil will be perfect for you. 

Best Synthetic Oil review

1, Castrol EDGE 5W-30 Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

This Castrol EDGE 5W-30 Motor Oil is produced by a major company- Castrol, which is well-known all around the globe. Castrol has been such a leading company in terms of producing synthetic oil that you can see its slogans and advertisements almost every corner in the world. Castrol has been one of the best choices in many drivers’ list and has proved this by its perfect product.


With its advanced premium full synthetic motor oil, this synthetic oil can offer strength under extreme pressure to you.

The unique titanium technology can maximum engine performance and protect your engine.

This synthetic oil is slipperier and does a better lubricating job in a cold environment.


You need to change it every 5000-7500 miles.

2, Valvoline SynPower 5w-20 Full Synthetic Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

This stuff speaks for itself and does not require a review. It is produced by another industry-leading company you can completely believe – Valvoline. The synthetic oil belongs to one of the company’s best lines- SynPower, which can satisfy the need of all the famous North American passenger vehicles. Therefore, it is one of the best high mileage synthetic oil in our recommended list.


You will own outstanding high-temperature protection under severe driving conditions and superior cold-temperature protection through faster oil flow at start-up.

It provides fantastic cleaning power to you.

It will help maintain fuel efficiency as the using length is expanded. 

It can be used more than recommended mileage, about 10k miles.


The container of this product is unsatisfactory.

3, Mag 1 Full Synthetic 5W-30 Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

Today’s engines, machinery, and equipment are evolving rapidly as OEMs push for more power density, lighter viscosity oil, and increased fuel or fluid efficiency. MAG 1 is leading the way in this new evolution, based on the science of advanced additives and powerful molecular structures. It’s all part of the exclusive FMX Technology System. It means– despite lower viscosities– MAG 1 still delivers extraordinary performance, strength, and durability, in every grade. Even the thinnest MAG 1 oils and fluids perform better than thicker oils of the past.


Its chemical compositions equip MAG 1 with excellent resistance to cold start wear. 

Leading OEM viscosity grade is fuel economy.

It can satisfy the need of most North American passenger vehicles.


The oil will burn out if the engine gets overheated or too hot outside.

4, Mobil Super 5W-30 Synthetic Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

When it comes to the Mobil Super 5W-30 Synthetic Motor Oil, it is believed that it is one of the best sellers. As one of the most famous companies in the oil industry, Mobil has been a powerhouse in the American oil industry during its exitance of nearly 100 hundred years. Therefore, you don’t need to worry about its performance in that it provides a very high standard and offers a class-leading function.


It works well with standard oil filters.

It provides the best protection for critical engine parts.

It performs better than conventional and synthetic blend engine oils.


It is a little expensive than other synthetic oils.

5, Royal Purple Synthetic Motor oil

product-1 Best Synthetic Oil for Protecting Your Engine

Royal Purple is known as an American manufacturer specializing in lubricants for many different types of vehicles. All its high-quality products have provided Royal Purple with a large and loyal fan-base, including the Royal Purple Synthetic Motor oil. Royal Purple’s line of synthetic lubricants and oil filters has been regarded as one of the best synthetic motor oil.


This oil has achieved broad support from many customers.

Your engine can work well even if it is at extreme stress.

It can be used for a long time.


It is not suitable for a diesel engine.

6, Liqui Moly Premium Synthetic Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

If you are looking forward to a long-lasting synthetic, we are highly recommended this Liqui Moly Premium Synthetic Motor Oil. It can not only do an excellent job in protecting the life of your engine against wear and tear but also display high lubrication qualities in some extreme situations.


It is suitable for both diesel and gas engines.

You can enjoy its long service life.

It offers reliable user experience to you even in extreme conditions.


You have to pay a little more for it than others.

7, Shell Rotella T6 Diesel Synthetic Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

Considering its variety of performance benefits, we also highly recommend this Shell Rotella T6 Diesel Synthetic Motor Oil to you. As a car owner, you must have known that the engine functionality will be maximized if you choose the correct oil for it. So, why not choose this one who can help improve fuel economy?


It can provide protection even in some extreme conditions by lessening engine friction.

Thanks to the adoption of free-flowing synthetic base oil, you can save fuel in the long run.

It can improve the service life of the hardware.


It is slightly more expensive.

It is not suitable for racing conditions.

8, Mobil 1 Extended Performance 5W-30 Motor oil

product-1 Best Synthetic Oil for Protecting Your Engine

It is no doubt that you will be delighted with this best synthetic motor oil since it has received high praise from several motorists. That is to say, Mobil 1 is the top1 best full synthetic motor oil among all the products we have compared. Therefore, you don’t need to worry about its performance after using it.


Mobil 1 will make you amazing about its anti-wear property.

It is made by a reliable brand.

It protects you in nearly 15000 miles.


We also received some feedbacks which claims it performs just about average.

9, Pennzoil Platinum 5W-30 Full Synthetic Motor Oil

product-1 Best Synthetic Oil for Protecting Your Engine

We also recommend a Pennzoil product to you for Pennzoil offers rare full synthetic oil on the market. Your car deserves such a high oil if you want to maximize the function of your engine. It is such an excellent product that it will keep your engine working well even if you decide a move to Alaska.


The platinum line guarantees its performance in some extreme situations.

Pennzoil synthetic motor oil provides improved fuel economy, on average, an extra 550 miles per year compared to a dirty engine.

Advanced full synthetic oil formula provides wear protection from friction and oxidation stability.


It is less famous because this company seldom advertise their products.

10, Schaeffer Supreme 9000 Full Synthetic Engine Oil

product-1 Best Synthetic Oil for Protecting Your Engine

The last product on our list is from Schaeffer. This is the best synthetic oil by far. With the correct additives to keep your engine clean and prevent gunk and built-up, the Synthetic Oil can go up to 15,000 (not recommended), but Schaeffer oil quality stands up and beats the brand names. 


It keeps the car engine away from oil residue and sludge.

It shows excellent efficiency in lessening friction and reducing metal-to-metal contact.

It will improve engine durability without affecting fuel economy.


The price is nearly double than other oils.


As a matter of fact, there are thousands of synthetic oils in the market. You are provided with many more choices than before. On the above, we deeply analyze the ten best synthetic oils for you to find the best oil filter for yourself. At present, there are mainly two types of synthetic oils in the market: Synthetic Blend and Full Synthetic. Synthetic blend is combined with conventional motor oil and a company’s synthetic base oil. It can offer you some of the benefits of full synthetic oil. On the other hand, a full synthetic can give the best protection and performance to you. You must find what type of synthetic oil do you need.


1. What factors do you need to consider before choosing synthetic motor oil for your car?

To be honest, there are many factors you need to consider before choosing synthetic motor oil for your car; after all, it is closely connected with the service life of your engine. Compatibility with existing oil, viscosity grade as well as additives is top3 considerations when choosing a synthetic motor oil. First of all, it is no problem for you to pour synthetic oil into your conventional crude. However, you’d better check your vehicle owner’s manual to find out the specific type of fuel that can be used in your vehicle. Secondly, something like 10W-4O or even 15W-50 is suitable for you if you are often in some extreme driving conditions. Of course, something like 5W-20 or even OW-20 is ideal for you if you frequently drive in snow days. At last, the existence of additives is the main difference between different brands of oils. You are suggested to look at the most common additives used in your alternative plan.

2. When to change your oil?

According to many experienced drivers and experts in the motor industry, they suggest regular oil changes. Also, it will be better if you use the same brand and SAE viscosity as the factory settings. Therefore, you are urged to be a responsible car owner in terms of checking every part of your vehicle regularly.

3. Why do we recommend synthetic oil to you?

As experienced staff in the motor industry, we have our reasons to recommend synthetic oil to you. First of all, synthetic oil can extend engine life. It will clean and remove deposits by a high degree of natural solvency. This advantage will not only keep your car run smoothly but also extend the lifespan of every component of your vehicle. Secondly, it can also help us maximize engine performance. As we know, cars with high performance and some race cars are using synthetic oil. So, you don’t need to worry about its superior engine performance. We have received a lot of good feedbacks from many buyers. Also, using synthetic oil does well in improving fuel mileage. Premium synthetic oil can reduce metal-to-metal friction, which will help key engine components, therefore making full efficiency of your engine.

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