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Can You Use Regular Oil After Synthetic

Can You Use Regular Oil After Synthetic? Guide & Explain

The engines inside cars don’t last forever. No matter how carefully you try to handle your vehicle, you can’t avoid corroding parts.

Currently, two types of oil are most commonly used: regular oil and synthetic oil. But, can you use regular oil after synthetic? Many experts have chosen these 2 lubricants to protect the engine. So can regular oil after synthetic be used?

You can use it all at once, but we don’t recommend using it too many times. Let’s find out the differences between these two oils and when to use them.

Can You Use Regular Oil After Synthetic?

Can You Use Regular Oil After Synthetic

There are many topics related to motor oils, such as ” regular and premium gas” or “can you use regular oil after synthetic.” In this article, we will answer you about the problem of using regular oil after using synthetic oil.

As we said above, you can use regular oil after synthetic. Both oils have a similar use, and they do not have too many differences.

The primary role of the lubricant is to protect and prevent rusting of the vehicle’s engines. After using the oil, you can see the parts of the car running more flexibly. You should change this compound periodically so that the machines do not rust and operate for a long time.

Therefore, you can use regular oil after synthetic without worrying about damaging your engine. Some believe that once a synthetic lubricant is used, the original cannot be used anymore. But that is a misconception. You can flexibly replace these 2 oils together.

The Difference Between Regular Oil And Synthetic Oil

The Difference Between Regular Oil And Synthetic Oil

Although regular oil and synthetic oil have many similarities, they also have a few differences that you need to be aware of:

Lubrication ability

Lubricity is one of the most important factors when choosing this compound. Compared to synthetic, regular oil can smooth the engine but is not very efficient. If you use it regularly, you will have to periodically change the oil for the car’s parts to ensure the car works properly.

As for synthetic, you can see the effect of this oil after use. This lubricant helps the car operate much more flexibly than regular oil. You do not need to change the oil too many times and can comfortably drive for a long.


The viscosity of regular and synthetic oil also has apparent differences. Once again, synthetic oils beat conventional oils.

Specifically, when you do not use the car often, especially in winter, the engines tend to freeze, and it isn’t easy to operate. At this point, you need to use a lubricant. While regular oils don’t work in the winter, synthetic oils have good heat tolerance and will do their job well even in the cold.

Impurities inside the oil

Regular oil is entirely natural, and synthetic is artificial. Therefore, the impurities inside the oil have some differences.

As for regular oil, this compound contains a lot of different impurities and is very easy to be contaminated with dirt. If you own a pickup truck and have to travel on long roads regularly, dirt from the outside environment will contaminate the oil and deposit dirt. Then, dirt will clog the engine and affect the life of the car.

As for synthetic, lubricant manufacturers use only the best compounds to create. Therefore, contamination from the external environment is impossible.

Used Time

Frequent oil changes will make you uncomfortable. Therefore, the use time of the oil is also a point worth noting.
Specifically, regular oil can only be used for about 3000 miles. If you don’t have to travel long distances, this lubricant will save you money in use. If you have to go long distances and have rough terrain, regular oil is not correct.

As for synthetic oil, this oil can last up to 25,000 miles. This lubricant is highly effective so that you can use it with confidence.

Which Oil Is Better?

Which Oil Is Better

After studying the differences, we can conclude that synthetic oil is better in every way. You can see the superiority in the different points of these two oils.

As for regular oil, you can find them at any auto repair shop. This oil is also relatively cheap, so there are many people to choose from. But when it comes to oil properties, viscosity, lubricity, or service life.

Therefore, many car enthusiasts will choose synthetic oil. They prefer this oil because the effect after each lubricant change is more effective than regular oil. Even experts in mechanical repair often use synthetic oil to maintain cars for everyone.

When Can Regular Oil After Synthetic Oil Be Used?

Although using regular oil after synthetic is not harmful, you should not change it too often. Constant switching will cause your car serious problems. The engines won’t be as efficient as before. You will also have to regularly visit the car repair station to maintain the internal components.

Even using regular oil after synthetic oil will cause the performance of the engine to decrease many times. Once you change the regular oil in, you won’t be able to use synthetic oil again. And from there, the internal components will not be able to run as flexibly as before.

Therefore, you should only use regular oil after synthetic oil during emergencies. You should consult with car repair experts to get the best maintenance for your car.


You can change from synthetic oil to regular oil. But, we do not recommend doing this with regular oil as it will significantly reduce the vehicle’s performance. I hope the above article has helped you find the correct answer on the topic “can you use regular oil after synthetic” and make the right choice for your car.

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