Can You Mix 5w30 and 10w30?

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Can You Mix 5w30 and 10w30

On this blog, you will learn the fact about mixing different types of motor oil, especially can you mix 5w30 and 10w30, why it matters, and what you should do if you are in the market for new motor oil.

Can You Mix Oils?

It’s not advisable to mix two different types of oils in your vehicle, but many drivers do that, and it hasn’t affected their engine or transmission yet. Apparently, there are different kinds of oils, and each kind has a different viscosity, and each kind of oil contains different additives.

It is very important that you understand the differences between the two oils you’re going to mix together. But motor oil does just one thing. It keeps your engine lubricated. It doesn’t matter whether your car is a Cadillac or a Chevy. Make sure all those gears are engaged and functioning smoothly. If they’re not, it’s like your car is missing a gear. A car with missing gear won’t run very far, or at all, and it will eventually overheat and need repair.

Can You Mix 5w30 And 10w30 Oil?

Running 10W30 in addition to 5W30 will not harm your engine. Adding 10W30 to your current mix is safe, and will not cause your engine to run any worse. But keep in mind that 10W30 has more density than 5W30. These two motor oils are very similar in viscosity; hence, they might mix perfectly in your engine. Therefore, you can mix 5W30 with 10W30 with no ill effects whatsoever.

Using only one type of oil for your engine is the best choice, especially if you have a high-performance engine. However, there is usually one recommended oil, in particular, that is better than all others.

Combining two different oils, whether you are combining a synthetic oil with conventional oil, or you are combining oils with different viscosities, will not harm your engine but it can cost you a few important things you may not want to lose.

Does Mixing 5W30 with 10W30 Affect Your Engine?

Generally, when you mix any two different oils (whether they differ by type or viscosity), it tends to decrease your engine’s performance and makes the interval between oil changes shorter.

This is because the additives in the oil won’t blend with the other additives in the engine. Thus, your engine won’t get the most of both oils. This is important if you drive your vehicle in cold weather. At low temperatures, with the differences in the viscosities of these oils, your engine components may not get full advantages of the oil.

In fact, thicker oils like 10W30 are actually meant for engines that carry heavier loads, so they are thicker when cold. That makes it better in colder temperatures. However, in warmer weather, thinner oils work better because they provide more lubrication.

This does not cause any harm to your engine; rather, it simply means your engine is getting more of what it needs to run at its peak. The worst scenario is usually when you lose your warranty. In most cases, this will happen when you have an unexpected problem with your car.

Final Thought

Yes, you can mix oils with different weights or types. However, I wouldn’t recommend it. Because mixing two or more oils at the same time dilutes their effectiveness and makes it more likely for a negative experience to occur.

This is also true for most other vehicles, not just cars, as mixing oils can void your warranty.