Can You Mix 0w30 and 5w40 Oil? (Explained!)

Using the right and recommended motor oil for your engine is a vital thing. This is why many people are asking if they can mix 0w30 oil to 5w40 oil. So if you also want to know the answer, stay and keep reading because you are on the right page.

So can you mix 0w30 oil to 5w40 oil? Yes, you can mix 0w30 oil with a 5w40 oil, but it is not advisable and recommended. This means that you do not have an order not to mix these two motor oils, but you can still do it.

When it comes to this question, the public is divided. Some car owners would say that it is okay to mix 0w30 oil with 5w40 oil. However, some people would say that mixing 0w30 oil with a 5w40 oil is not okay. 

Some of these car owners who say no also say that doing a mix of 0w30 oil to 5w40 oil can cause engine failure and damage to your vehicle’s components. In reality, though, an engine failure and component damage from a mix of 0w30 oil to a 5w40 oil is over the top and is very unlikely to happen. So yes, the idea of mixing 0w30 oil with a 5w40 oil is not recommended, but no damages will likely happen. 

So in this article, we’ll be discussing the mixing of 0w30 oil to 5w40 oil. So without further ado, let’s get started.

Can You Mix 0w30 and 5w40 Oil

Can I Mix 0w30 and 5w40 Oil?

The answer is yes. Yes, you can mix 0w30 oil with 5w40 oil. Of course, some people will say no, but the truth is, you definitely can. 

If you want to mix these two motor oils, then you definitely can. It is entirely the decision of the vehicle’s owner. Some car owners have already been mixing 0w30 oil to 5w40 oil and using it on their vehicles. 

You have to remember, though, that such an act is not recommended. What is recommended is that you will use single motor oil. You will use one motor oil for your engine. 

This is the ideal and the recommendation. However, if you feel like you want to use two motor oils and that you want to mix them up, then you definitely can. However, you have to be aware of the risks and the fact that doing so is not recommended and that if you do it, you will do the opposite of what is being recommended.

Can You Add 0w30 to 5w40 Oil?

Yes, you can add 0w30 to your 5w40. This happens all the time, especially if there is no available motor oil similar to the current one in your vehicle. 

You can be in some places, and you cannot find a motor oil similar to what you are using. If you have no other choice and are already running out of oil, you can add 0w30.

Can You Add 5w40 to 0w30 Oil?

Yes, you can also add 5w40 to your 0w30. Though this is not recommended, you can still do it. There are many situations where you have no other choice but to add different motor oil to your current one.

Is It Ok To Mix 0w30 and 5w40 – Possible Downsides?

Yes, it is okay to mix 0w30 oil with a 5w40 oil. Just remember, though, that mixing 0w30 oil with a 5w40 oil is not recommended. However, even if the act is not recommended, you can still do it. 

You can still mix two oils. If you want to know if your engine will become damaged or if your components will also become damaged, then you can stop worrying because an engine failure is pretty unlikely to happen. The only downside that can happen is your warranty. 

If your vehicle is still under warranty, its warranty will be void if you mix 0w30 oil to a 5w40 oil and use it in your engine. However, if your vehicle is already out of warranty, then you have nothing to worry about.

What Happens if You Mix 0w30 and 5w40 Oil?

If you mix 0w30 oil to 5w40 oil, there is nothing significant that can happen. On the bad side, there is no engine failure or any damages to your vehicle. The motor oils are not harmful to your engine, so there is no engine failure to worry about. 

However, on the good side, there is nothing to expect also. Some people say that you will not have the full benefit of the motor oils because you have mixed two. It is also best to mix 0w30 oil with a 5w40 oil, ensuring that the two oils have the same brand.

Summary

In summary, yes, you can mix 0w30 oil to 5w40 oil. You have to make sure that both of them have the same brand. If the two of them do not have the same brand, that is still okay, though. 

Motor oils will still do their job of lubricating your engine. So if you mix 0w30 oil to 5w40 oil, your engine will still be lubricated.

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My name is Hank, and I've been in the automotive industry for 27 years. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Let me know if you have any questions. Read more