Can You Mix Fully Synthetic with Semi Synthetic Oil?

When it comes to choosing engine oils, we think about getting better properties from the oil. Sometimes, we mix different oils to get better properties.

Generally, mixing oil is not recommended because it can reduce oil’s purity. But when we search for cost-effective oils, we often mix one with another.

So, you might be confused about whether you can mix fully synthetic with semi-synthetic oil or not. 

You have to know the safety and purity of oils after mixing these two oils. Moreover, knowing about the benefits and drawbacks of mixing oils is also essential.

Can you mix fully synthetic with semi synthetic oil?

You can mix fully synthetic with semi synthetic oil. Generally, mixing different oils is not recommended. You can mix fully synthetic and semi-synthetic oil because they are compatible with each other. Mixing these two oils will not negatively affect their properties.

However, if you want to mix synthetic and semi synthetic oil, you have to know about these oils first. Generally, synthetic oil is a man-made oil from different chemicals. Synthetic oil is made for receiving the best features of crude oil.

Synthetic oil has a lot of benefits over conventional oils. For example, synthetic oil has fewer contaminants and impurities. So, it will also induce fewer deposit build-ups. Moreover, synthetic oil helps to make the engine long-lasting.

On the other hand, semi synthetic oil is also made from synthetic oil. But semi-synthetic oil has a mixture of mineral oil. So, semi synthetic oil is not 100% pure synthetic oil. So, the performance of the semi synthetic oil will not be the same as synthetic oil.

People use semi synthetic oil for its cheaper price. Generally, the price of synthetic oil is pretty high. That’s why people use semi synthetic oil.

Generally, mixing different oils is not recommended. But mixing synthetic and semi synthetic oils will not cause any problem. Because synthetic oil and semi synthetic oil are made from similar materials.

So, these oils are compatible with each other. If you mix synthetic and semi synthetic oil, the properties of the oils will not hamper much. The properties of synthetic oil might reduce earlier. But the semi-synthetic oil will not be affected much.

Even if you mix synthetic oil with semi-synthetic oil, the properties of semi-synthetic oil might enhance. Moreover, the mixing option will make the cost of the synthetic oil less than before.

However, if you want to make the semi synthetic oil better, you can mix some synthetic oil with it. But if you don’t need to mix synthetic oil with semi-synthetic oil, you should not mix them. Because mixing oils is not recommended for preserving the quality of the oil.

What happens if you mix fully synthetic oil with semi synthetic?

If you mix fully synthetic oil with semi-synthetic oil, nothing detrimental will happen. People often mix fully synthetic oil with semi synthetic oil to reduce the cost of fully synthetic oil. Moreover, mixing these oils will not cause any harm to the engine.

Generally, when we mix two oils, we think about the safety and quality of the oil. So, when you mix fully synthetic oil with semi synthetic oil, the mixture of the oil will be safe. It will not affect the engine.

But the performance of the engine might reduce because of adding semi synthetic oil. Moreover, when you add fully synthetic oil with semi synthetic oil, the quality of the oil will not reduce much. So, you can mix these two oils.

What is the difference between full synthetic and semi synthetic motor oil?

Now that you know you can mix full synthetic oil and semi synthetic oil, you might want to know the difference between full synthetic and semi synthetic motor oil. So, let’s see the difference between these.

Purity:

Full synthetic and semi synthetic oils have a difference in purity. Generally, fully synthetic oil is 100% pure synthetic oil. Other oils and minerals are not mixed with fully synthetic oil. So, this oil will have fewer impurities and contaminants.

On the other hand, semi synthetic motor is not 100% pure synthetic oil. Semi-synthetic motor oil has minerals in the oil. So, it will not be fully impurities-free like fully synthetic oil.

Protection:

Fully synthetic oil provides better protection than semi synthetic oil. It will provide better wear and corrosion protection. But semi-synthetic motor oil will not provide much protection as fully synthetic oil. Moreover, the corrosion and wear resistance will also be less.

Semi-synthetic motor oil might give better protection than other conventional oils. But it will not be better than fully synthetic oil.

Performance:

Fully synthetic oil provides better performance than semi synthetic oil. The overall performance of the engine will be better.

But semi-synthetic oil will not provide performance like fully synthetic oil. Semi-synthetic oil might provide better performance than fully synthetic oil. But will not be like fully synthetic oil.

Is full synthetic better than semi synthetic?

Yes, full synthetic oil is better than semi synthetic oil. You might want to know the reasons why full synthetic oil is better than semi synthetic oil. So, let’s see the reasons.

Cleaner motor oil:

Full synthetic oil is cleaner than semi synthetic oil. Generally, full synthetic oil is free from impurities. Moreover, full synthetic oil doesn’t contain other oils than base oil. But semi-synthetic oil is not cleaner than full synthetic oil.

Semi-synthetic oil has mineral oil with it. So, it will not be cleaner like full synthetic oil. That’s why full synthetic oil is better than semi synthetic oil.

Performs better:

Full synthetic oil performs better than semi synthetic oil. For the purity of full synthetic oil, it will work better than other oil. Moreover, full synthetic oil is man-made oil added with other additives. These additives make full synthetic oil better than semi synthetic oil.

Lasts long:

Full synthetic oil lasts a longer time than semi synthetic oil. Even full synthetic oil has a greater shelf life. When you use semi synthetic oil instead of full synthetic oil, it will last longer, and you will not need to change oil frequently.

Protects better:

Full synthetic oil protects different components well. Even full synthetic oil is one of the best for preventing corrosion and wear. But semi-synthetic oil will not protect components like full synthetic oil. That’s why full synthetic oil is better than semi synthetic oil.

Can I mix full synthetic oil with regular oil?

You can mix full synthetic oil with regular oil. But mixing full synthetic oil with other oil is not recommended. Generally, mixing oils is not a good idea. It can degrade the properties of high-quality oil.

Generally, full synthetic oil is not mixed with other oil. So, it provides better performance. But regular oil has impurities and contaminants. So, regular oil is not better than full synthetic oil. So, if you mix full synthetic oil with regular oil, the quality of full synthetic oil will degrade.

Moreover, you will not get the best performance of full synthetic oil. The mixed oil will not be cleaner than full synthetic oil. That’s why mixing full synthetic oil with regular oil is not recommended.

Can you mix high mileage synthetic oil with regular synthetic oil?

You should not mix high mileage synthetic oil with regular synthetic oil. Generally, high mileage synthetic oil is specially made so that it can perform better. Moreover, high mileage synthetic oil is cleaner than other oils and also lasts a long time.

But regular synthetic oil might have mineral oils in it. Sometimes, synthetic blend oils are used as regular oil. Regular synthetic oil is not better than high mileage synthetic oil.

So, if you mix high mileage synthetic oil with regular synthetic oil, it will not enhance properties. Mixing these oils might reduce the oil’s cost. But it will not perform well.

Can you mix different brands of synthetic oil?

If you want to mix different brands of synthetic oil, you can mix. But mixing different brands of synthetic oil is not recommended. Because when you mix different brands of synthetic oil, the quality of the mixed oil will degrade.

People mix different brands of synthetic oil to reduce the cost of full synthetic oil. But mixing oils will not provide better performance. If you want to get better performance of synthetic oil, you should use one specific type of brand.

Final Thoughts

Mixing fully synthetic oil with semi-synthetic oil is not a good idea, but you can. Because when you mix fully synthetic oil with other types of oils, the properties of the fully synthetic oil will not enhance. Moreover, you will not get the better performance of fully synthetic oil.