Can You Mix 5w30 And 10w30 Motor Oil? – Expert’s Opinion

Can You Mix 5w30 And 10w30

5w30 and 10w30 both are incredible oils for performance and viscosity. Though these two oils are almost the same, the question remains if you can mix these two or not. The main difference between these two oils is mainly in the cold-flow. Otherwise, everything seems to be similar. 

So, Can you mix 5w30 and 10w30? Yes, you can mix 5w30 and 10w30 oil. But only when both of them are at operating temperature. At operating temperature 5w30 and 10w30 are the same and can be mixed. But at low temperatures, they show opposite reactions. They can’t be mixed during low temperatures. 

There is much more to know about mixing 5w30 and 10w30 oil. Let’s get started to dig deeper and know about the real differences between these two oils and when you can mix these two. 

Can You Mix 5w30 and 10w30?

Mixing these two is possible when they are at operating temperature. But you will discover a lot of things when giving a try to mixing these two. You should keep a thing always in mind that you can’t mix the oils which come with the same weight. That’s why 5w30 and 10w30 might not mix sometimes as the 5w30 and 10w30 both come with the same weight.

At low temperatures, 5w30 is thinner and 10w30 is thicker, so you can’t mix them during that time. Moreover, mixing the oils which are different from each other can’t be good for your vehicle. If you somehow mix the 5w30 and the 10w30 then you won’t be able to make your vehicle do good for you because these two oils are different from each other.

The mixture of these oils may have the lowest or no effect at all on the engine of your vehicle as they are too much different from each other. If you do a mixture of them when it’s topping up, still that won’t help you to do anything. 

Difference Between 5w30 and 10w30:

Many people think that 5w30 and 10w30 aren’t different from each other. The same weight and temperature of these oils make people think that, but that’s not true. There are plenty of reasons which make these oils different from each other. So let’s start introducing those reasons:

5w30 10w30
The 5w30 is thinner than the 10w30The 10w30 is thicker than the 5w30
This oil is used for light-duty engines10w30 is used for heavy-duty engines that have to carry heavy loads
5w30 is thinner in low temperaturesYou will find this oil thicker at low temperatures
This oil isn't capable of providing sealing activities10w30 is highly capable of providing sealing activities
Gives service within the temperature of 30 to 35 degree CelsiusProvides services within 18 to 30 degree Celsius
Can be used with the help of light service petrol and dieselRequires heavy load-hauling engines

Can you put 10w30 in a 5w30 engine?

You will find many oils that mix properly. But that thing doesn’t happen with these two most often. Even if you manage to somehow mix these two in high temperatures, the result won’t be fruitful for you. 

The main reason is they come with the same weight. You may think there is no issue with using one of them as the replacement of the other one. But, no. Though we can mix these two oils at operating temperature these oils tend to not work as the replacement of each other. 

There are a lot of differences between these two oils. And we all know all kinds of oil can not be used in all kinds of engines. 5w30 and 10w30 are formulated in a way that they offer different services. 

By looking at the differences, we can say that 5w30 is made to help you with light-duty engines. On the other hand, the 10w30 is bound to be the fuel for heavy-duty engines. As you will expect to have light-duty services from 5w30, you can’t use 10w30 in the 5w30 engines. If you do so the service will come as the reverse of what you wanted. 

Is mixing 5w30 with 10w30 bad?

Will you like something which won’t be helpful for you at all? Well, that’s what mixing 5w30 with 10w30 seems like. Mixing 5w30 and 10w30 will bring zero advantages for you. You won’t get a little amount of help by doing so.

Before mixing these you definitely should know that these are the oils that can’t be mixed always. Even though as we said above, you can mix these two oils in some cases, that will bring the least benefits for you. The mixture works for vehicles that are different and meant for different services.

Despite sharing the same weight, these two are different from each other. Even you can separate them depending on the looks of them. While 5w30 tends to work for light-duty engines, 10w30 works for heavy-duty engines. Moreover, they show the opposite reactions at low temperatures.

At that phase mixing these two won’t bring a single good impact on your vehicle. Most probably your vehicle won’t run if you put the useless mixture in the engine of your vehicle. 

What will happen if you mix 5w30 and 10w30?

You may think that mixing oils may help you to get good service, high performance, and great efficiency from your vehicle. But that happens when you mix those oils which are bound to give similar services. But in the case of 5w30 and 10w30, having better service by mixing these is next to impossible.

Although it’s a little disappointing, if you make a mixture of these oils then the whole attempt will be considered a waste of time. Because the mixture won’t be capable of making your vehicle run. Literally, both of them can’t be used any more once they are mixed. If you somehow manage to use it, your vehicle will behave weird. 

The mixture won’t help your engine to provide you with high performance or efficiency at all. As both of the oils are made to be used in different kinds of phases, you should never mix them. Still, if you do so, the whole process will be considered to be the waste of time, money, and energy.

Which is better: 5w30 or 10w30?

Although many people think 10w30 is the best, the answer to this question depends on the requirements of yours and the climate around you. The services of 5w30 and 10w30 are different. You can’t use them on the same engine. First, you have to ensure which one is good for your engine.

5w30 is well situated for those engines which are not bound to carry heavy loads. It is thinner and becomes the thinnest at low temperatures. Also, it can’t be used for sealant actions. So we can say if you want light-duty service then you should go for the 5w30. 

On the other hand, 10w30 is highly recommended for high duty performance. With all of its specifications and features, it is well situated for that. It also becomes thicker at low temperatures. Go for it if you want heavy-duty performance.

As you can see both of the oils are made for handling different kinds of situations so which oil is going to be better for you depends on the engine and vehicle yours. If you get the right one for your engine then definitely that will serve you the best.

When should I switch from 5w30 to 10w30?

At the operating temperature, both of the oils come with the same viscosity. But when at low temperatures 5w30 becomes thinner and 10w30 becomes thicker. Now you have to think about when to use which one.

If you are living in a region where it’s always cold, then you should use 5w30. You have to use 5w30 during winter. During summer you have to switch to 10w30. Because at that season 5w30 won’t be able to do good.

You also might need switching when it comes to the performance. If you want light-duty then you can stay with 5w30. But if you start feeling the necessity of heavy-duty performance then you have to switch to 10w30. Because that is best suited for carrying heavy loads.

Wrapping Up

By now, we hope that we have met the answer of can you mix 5w30 and 10w30? We have brought everything in this regard in front of you to make everything clear to you. Hopefully, the whole thing is clear to you now. If you ask our opinion, we must say that it’s not a good idea to mix these two oils.

But there can be situations when you will have no other options left. In those cases, you can use a mixture of these two oils. But yet, if you mix these two oils in expectation of getting better performance, you should stop right there. Cause the mixture won’t give you any beneficial factor in your vehicle. Instead, it may act less functional if you use the mixture. So, think before you do something foolish. Good luck!

James L. Rocha

Hey, I am James L. Rocha, breaking down all your queries is just as easy as that. I am running Auto Kits Lab especially to help you with all the necessary information you may need. I portray my experience here with passion and care that will surely meet your expectations.

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