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Can You Mix 5W20 And 0W20? The Ultimate Guide.

Published by Dustin Babich on

No, it’s not recommended to mix 5w20 and 0w20. Mixing motor oil viscosity grades can affect engine performance and cause damage.

It’s important to use the viscosity grade specified by the manufacturer for your vehicle. While 5w20 and 0w20 are both low-viscosity oils designed for use in colder climates, they have different flow characteristics. Mixing the two can result in an oil blend that’s too thin or too thick for your engine, leading to inadequate lubrication or increased wear.

Always check your owner’s manual or speak to a professional mechanic to ensure you’re using the correct oil viscosity for your vehicle. Additionally, sticking to regular oil change intervals with the recommended oil type can help keep your engine running smoothly.

Understanding 5W20 And 0W20

Understanding the viscosity of motor oil is crucial to determining its effectiveness. 5w20 and 0w20 refer to the oil’s viscosity ratings. ‘w’ stands for winter, so oils with lower w ratings function better in colder environments. 5w20 is a little thicker than 0w20, which means it may be better suited for hotter conditions.

If you mix them, you will end up with a blend of the two. This could result in an oil that is not ideal for the conditions you are driving in. Ideally, use whichever oil the manufacturer recommends in your car’s owner’s manual.

It’s crucial to change your car’s oil regularly for optimal performance and engine longevity.

Compatibility Of 5W20 And 0W20

Mixing 5w20 and 0w20 oils can be done, but is not recommended by car manufacturers. It is best to follow the owner’s manual and stick with the recommended viscosity. Mixing different oil grades can affect engine lubrication and performance, which can lead to damage and early wear.

In some cases, mixing oils can provide better fuel efficiency and performance, but this varies depending on the car. It is important to determine if the benefits of mixing oil outweigh the risks. In general, it is safer to use one type of oil, but consulting with a mechanic or dealer can provide more insight on your specific car’s needs.

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Make sure to check with your warranty to ensure that mixing oils does not void it.

When To Use 5W20 And 0W20

Using the right type of oil in your vehicle is crucial to ensure its performance and longevity. When considering whether to use 5w20 or 0w20, there are several factors to consider. These include the recommended oil type for your specific vehicle and engine, as well as the climate and driving conditions you typically encounter.

It’s important to follow manufacturer recommendations and consult with a trusted mechanic or oil expert if you’re unsure what type of oil to use. Mixing these two types of oil can also affect performance, so it’s best to avoid it altogether.

Protect your engine and get the most out of your vehicle by carefully selecting the right type of oil.

How To Safely Mix 5W20 And 0W20

Mixing 5w20 and 0w20 oil may seem like a good idea in a pinch, but there are some key considerations to keep in mind. Mixing oil weights can impact engine performance and longevity, so it’s important to take the proper precautions.

First, make sure that both oils are synthetic and meet the same specifications. Then, only mix in small amounts, no more than 10%, and be sure to mix them together thoroughly before adding them to your engine. Additionally, avoid mixing oils from different brands, as they may not be compatible.

Finally, keep an eye on your engine for any signs of trouble, such as unusual noises or poor performance, as these can be a sign of an issue. By following these guidelines, you can safely mix 5w20 and 0w20 oils without harming your engine.

Frequently Asked Questions For Can You Mix 5W20 And 0W20

Can You Mix 5W20 And 0W20?

Yes, you can mix them. However, it’s recommended to avoid it as it can compromise engine performance. Mixing two different oils can lead to inconsistent viscosity and may harm your engine’s important components.

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What Happens If You Mix Different Viscosities?

Mixing different oil viscosities can lead to inconsistent viscosity, which in turn, can lead to poor engine performance. This can include reduced mileage, decreased engine power and efficiency, and even increased wear and tear on vital engine components.

What Is The Difference Between 5W20 And 0W20 Motor Oils?

The main difference between the two is their viscosity characteristics. 0w20 is thinner and will flow more easily, especially in cold temperatures, meaning it can help with easy cold startups. 5w20, on the other hand, provides better protection at higher temperatures and works well with heavier vehicles.


Combining different motor oils is a common question that arises among car owners. The answer to whether you can mix 5w20 and 0w20 oils entirely depends on the car manufacturer’s recommendations. Some manufacturers allow it, while others explicitly instruct not to.

If you do mix them, it might affect the oil’s viscosity and lower the efficiency of engine lubrication. However, if you mix oils that are compatible, it won’t cause any damage to your engine. Always refer to the car’s manuals or instructions for the type of oil required.

Additionally, remember to consider the weather conditions before choosing a specific type of oil. Mixing different oils is not recommended unless your car manufacturer endorses it. It’s essential to use the right oil that matches your car’s requirements to ensure its longevity and efficiency.

Dustin Babich

Dustin Babich

Dustin Babich

As the passionate author behind, Dustin Babich is a knowledgeable expert in all things automotive. With a deep understanding of car tools, equipment, engines, and troubleshooting techniques, Dustin Babich shares invaluable insights, practical tips, and effective solutions to empower readers in overcoming car-related challenges.


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