Is It Safe to Mix 0W20 With 5W20? Here’s the Answer.

Published by Dustin Babich on

Mixing 0w20 with 5w20 is generally acceptable as long as the overall weight does not exceed the manufacturer’s recommendations. Using a slightly heavier weight can offer better protection in some vehicles.

If you’re wondering whether it’s okay to mix 0w20 with 5w20 motor oil, the answer is generally yes. As long as the total weight of the oil does not exceed your vehicle manufacturer’s recommendations, it is safe to mix the two.

In fact, mixing these motor oils can provide better overall protection for your engine. This is because the combined weight will be slightly heavier than 0w20, which can provide improved engine lubrication and reduce engine wear. However, it’s always best to consult your vehicle’s owner’s manual or a trusted mechanic before making any changes to your oil. In this article, we’ll cover more details about mixing 0w20 with 5w20 to help you make an informed decision for your vehicle.

Understanding Engine Oils

Engine oils are vital to the performance and longevity of your vehicle’s engine. They lubricate, protect, and clean the engine’s moving parts. There are several types of engine oils available in the market, each with its own set of characteristics and benefits.

Two popular types are 0w20 and 5w20. Mixing them is generally safe, as long as the combined viscosity rating falls within the recommended range for your engine. Viscosity refers to the oil’s thickness or resistance to flow. The lower the number before the w, the better the oil flows in cold temperatures.

While mixing engine oils can be done, it’s important to follow your vehicle’s manufacturer guidelines for recommended oil types and viscosity rating.

0W20 Vs 5W20 Engine Oils

When it comes to choosing the right engine oil, it’s essential to understand the differences between them. 0w20 and 5w20 refer to the viscosity of the oil that affects the engine’s performance. 0w20 is thinner at low temperatures, making it ideal for colder climates, whereas 5w20 is slightly thicker and performs better in warmer temperatures.

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Your car’s manufacturer recommends a specific oil viscosity, so it’s best to check your vehicle’s manual. Mixing different types of engine oil is not advisable as it can affect the oil’s performance and lead to engine damage. To ensure your car’s longevity and performance, make sure to use the recommended engine oil viscosity by your manufacturer.

Is It Safe To Mix 0W20 And 5W20 Engine Oils?

Mixing different types of engine oils can produce various consequences, including reduction in engine performance, increased wear and tear, and shortened engine life span. Mixing 0w20 and 5w20 engine oils can lead to unstable oil pressure and can also cause leaks as the oil may become too thin for certain parts.

It is recommended to use the oil type and viscosity rating that your vehicle manufacturer suggests. Topping up the engine oil with the opposite viscosity rating is not ideal, as it can affect the oil’s stability and potentially cause engine damage.

Following the manufacturer’s recommendations is the best way to ensure the longevity of your vehicle and to avoid costly repairs in the future. Always consult with a professional mechanic before making any changes to your vehicle’s engine oil type or viscosity rating.

Identifying Engine Oil Problems

Mixing 0w20 with 5w20 is not recommended as they have different viscosity grades. Identifying engine oil problems is crucial to maintain your vehicle’s longevity. Signs of engine oil problems include engine knocking, low oil pressure, and oil leaks. Ignoring these problems can lead to engine damage and costly repairs.

Common engine oil problems related to mixing these oils include reduced fuel efficiency, decreased engine performance, and increased engine wear. It’s important to use the recommended oil grade for your vehicle to prevent any potential damage. Consult with a professional if you have any concerns about your engine oil.

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Frequently Asked Questions On Is It Ok To Mix 0W20 With 5W20

Can I Mix 0W20 With 5W20?

Yes, you can mix synthetic 0w20 with 5w20 without any issues. Both are compatible and have the same viscosity range.

Will Mixing 0W20 With 5W20 Affect My Engine’S Performance?

No, it won’t affect the engine’s performance. Mixing two different types of oil creates a blend that has properties between the two oils.

What Are The Benefits Of Mixing 0W20 With 5W20?

Mixing 0w20 with 5w20 can offer better fuel economy and provide better protection against engine wear during cold starts.


Mixing 0w20 with 5w20 can be deemed safe based on several factors. Always refer to your vehicle’s owner’s manual for recommended oil viscosities and specifications. Be mindful of the potential impact of mixing oils, such as reduced fuel efficiency and engine wear.

For those living in colder climates, it may be beneficial to use a 0w20 oil for improved cold weather starting. Mixing oil types should be avoided unless in emergency situations, and is not recommended for prolonged use. Always consult with a qualified mechanic or oil expert if unsure about which oil viscosity to use.

Ultimately, proper maintenance and care is crucial to preserving the life and performance of your vehicle.

Dustin Babich
Categories: FAQ

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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