One question I receive in my garage from car owners is, “can you mix different brands of oil.” Surprisingly, the same question is circulating all over the Internet.
Sometimes, car owners ask whether you can mix different oil brands, viscosity, and categories. This information will be helpful if you get short of oil in the middle of nowhere.
Whether you are stuck in an emergency or going for an affordable fuel alternative, you must take into account the key factors of the oils – weight, grade, and viscosity.
This article will answer this question and other frequently asked questions. You’ll know if you can and what happens when you mix different oil brands.
Understanding Engine Oil Basics
Before diving into mixing brands, it’s essential to understand what engine oil is and what it does. Engine oil is not just a slick substance that keeps your engine parts moving smoothly, it’s a scientifically formulated liquid designed to:
- Lubricate engine components to minimize friction and wear.
- Cool the engine by dissipating heat.
- Clean internal parts by trapping dirt and debris.
- Protect against rust and corrosion.
- Seal gaps between piston rings and cylinder walls.
There are various types of engine oil, including conventional, synthetic, and synthetic blends. Each type contains base oils and additives that enhance performance under different conditions.
Types of engine oil
There are different types of engine oil, each tailored to specific needs and conditions. Understanding the distinctions is crucial for optimal vehicle maintenance. Here are the primary types of engine oil:
#1. mineral oil.
Characterized by high viscosity, mineral oil is more prone to deterioration when exposed to elevated temperatures. While effective in certain conditions, its limitations make it less suitable for high-temperature environments.
#2. semi-synthetic oil.
With additional additives for enhanced performance, semi-synthetic oil strikes a balance between cost-effectiveness and improved heat resistance. This type of oil is also used for its versatility and ability to provide better protection in various driving conditions.
#3. synthetic oil.
Often labelled as ‘fully synthetic,’ this oil type boasts superior properties, maintaining its effectiveness even in extreme temperatures.
Known for a longer lifespan compared to other types, synthetic oil is a top choice for those seeking optimal engine protection and performance longevity.
Why People Mix Oil Brands?
There are several scenarios where someone might consider mixing engine oil brands:
- You’re low on oil and the exact brand isn’t available.
- You’ve got leftover oil from a previous oil change.
- You’ve recently switched vehicles and have oil from different manufacturers.
- You’re topping up between oil changes rather than doing a full oil replacement.
In these situations, mixing can seem like a practical, cost-effective choice. But what does it mean for your engine’s health?
Can You Mix Different Brands Of Oil?
The short answer is yes, you can mix different brands of engine oil. Engine oils are generally compatible with each other, and mixing them won’t cause any immediate catastrophic damage to your engine.
However, there are some important considerations to keep in mind.
#1. Similar Viscosity Grades.
When adding oil to your engine, it is crucial to choose an oil with a viscosity grade that matches your vehicle’s requirements. If your car requires 5W-30 oil, for example, use another 5W-30 oil from a different brand.
Mixing oils with different viscosity grades could lead to inconsistent lubrication, reduced engine performance, and potential engine damage.
#2. Avoid Mixing Types.
Refrain from mixing different types of engine oil, such as conventional and synthetic oils. Each type has unique additives and properties, and mixing them may alter their performance characteristics, compromising the engine’s protection and efficiency.
#3. Be Mindful of Additives.
Some brands may include specific additives in their engine oils to enhance certain properties.
While mixing oils with different additives might not cause immediate harm, it could reduce the overall effectiveness of the additives, impacting engine performance in the long run.
#4. Stick to Quality Brands.
It is always best to use engine oils from reputable and trusted brands. High-quality oils (like 49 North Lubricants) are more likely to have consistent formulations and meet the necessary industry standards, ensuring optimal engine protection.
#5. Considerations for New Engines.
If you have a new car under warranty, it’s advisable to stick to the manufacturer’s recommended engine oil to avoid any potential warranty-related issues.
consequences of mixing engine oils
Here are some consequences you might face after mixing engine oils:
#1. viscosity issues.
Mixing oils with different viscosities can result in inconsistent oil flow, potentially compromising engine lubrication and causing increased friction.
#2. additive compatibility.
Engine oils often contain additives that enhance their performance. Mixing oils from different brands or formulations may lead to incompatible additives, reducing the oil’s overall effectiveness.
#3. chemical reactions.
Different engine oils may use different base oils and additives, and mixing them can trigger chemical reactions that may produce sludge or deposits, reducing engine efficiency.
#4. reduced performance.
Mixing oils can lead to reduced fuel efficiency, increased emissions, and a decline in overall engine performance.
#5. warranty voidance.
Some vehicle manufacturers specify the type of oil that helps maintain warranty coverage. Mixing different oils may void your warranty, leaving you responsible for any repair costs.
To enhance fuel efficiency, always use the appropriate engine oil. Here are some indicators that you might be using the wrong engine oil for your car.
Emergency Oil Mixing Procedures
When facing low oil situations away from your preferred brand or viscosity, follow these guidelines for safe emergency mixing.
Always prioritize safety when handling motor oil, following proper motor oil precautions and safety measures to protect yourself and the environment:
- Check current oil level and condition
- Add small amounts gradually while monitoring
- Choose the closest viscosity match available
- Plan for complete oil change within 1,000 kilometers
- Monitor engine performance closely after mixing
FAQs.
Q: Can You Mix Two Different Brands Of Synthetic Oil?
While we can use synthetic oils to replace mineral oil or mix it with mineral oil, is mixing synthetic oil brands bad? No, you can safely mix different synthetic brands.
So, can you change synthetic oil brands? Most synthetic oil manufacturers state it is acceptable to replace synthetic oil with another brand or mix different brands.
However, ensure you do not mix different synthetic brands with different oil viscosity. Doing so will cause engine sludge and ruin your engine.
Q: Can You Change From Mineral Oils To Synthetic Oil?
Using synthetic oil improves engine cleanliness and higher levels of protection without concern for compatibility or engine breakdown.
Changing to synthetic oils can also (in some cases) improve overall engine performance and even reduce fuel consumption.
However, synthetic oils flow better in cold temperatures but aren’t suitable when they become too hot or in warmer temperatures as they become too thin.
Synthetic oils are engineered to perform better in all (whether cold, warmer, or extremely hot) temperatures. They’re offered in a wide range to suit all climate and weather conditions.
Using synthetic oils means you can leave the oil longer in the engine between oil changes. The oil filter is as good as the oil itself. So, when using synthetic oil, do not forget to use a premium filter.
Always follow the manufacturer’s instructions on oil change intervals when using synthetic oils. Of course, synthetic oils should stay longer than conventional oil but don’t abuse the oil change interval.
In all, synthetic oil is superior to mineral oils. Some applications may prefer mineral oils over synthetic oils. Therefore, I advise you to follow your owner’s manual.
Q: Can You Mix 5w30 And 0w20?
You should be fine when you mix 0W20 and 5W20. This is because both 0 and 5 are pretty identical to work with no or slight difference in cold weather. However, the 0w will flow better at low temperatures than 5w even if they have the same viscosity ratings.
The 0w is for better fuel economy. The 5w is close to it as well. You can safely interchange or mix the oils. However, it’s better to replace them than to mix them. While your engine may not experience any issues, it’s better to stick with the manufacturer’s specifications.
Q: Is it okay to mix different oil brands or types?
Mixing different oil brands may not cause a problem in the short term, but it’s not a good idea to mix different oil brands.
Generally, premium engine oils are chemicals. So, it may not be a good idea to mix them. Do not say oil is oil. Mixing them means you’re mixing different chemicals.
However, mixing different brands of oils like Valvoline and Castro may not make any difference in the engine performance. Still, the motor oil brands may not function at their optimal level.
Final Words
In summary, I do not recommend mixing different brands of oil. Even if it has the same SAE grade or you have Pennzoil Platinum and Ultra Platinum. Sometimes, we may find ourselves in situations where there are no options.
When stocked in situations with no options, mix the oils. But you have to do an oil change before the recommended interval to prevent engine breakdown.
So, when asking, can you mix different brands of oil, the short answer is that it depends on whether the oils are compatible and if the engine will accept it.