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Home » Can I use 10w30 instead of 5w30? 10w30 vs 5w30 Engine Oil

Can I use 10w30 instead of 5w30? 10w30 vs 5w30 Engine Oil

Can I use 10w30 instead of 5w30

The type of engine oil you use can have a big impact on your car’s performance and longevity. Engine oil helps keep the moving parts of your car lubricated, which prevents them from wearing down, and it helps cool the engine by carrying away excess heat. The question now is, can I use 10w30 instead of 5w30? Let’s find out more about Engine Oil 10w30 vs 5w30.

Yes, you can use 10w30 instead of 5w30. They are both oils that are generally safe for use in your car. However, 5w30 is better than 10w30 because it has a higher viscosity, which means that it is thicker and more viscous. This makes it better at protecting your engine from wear over time.

Preferably, you should only use the oil that is recommended by your car manufacturer. If you were to use a thinner oil than recommended by your manufacturer, it could cause damage over time as a result of excessive friction between moving parts in your engine. You may want your choice to be heard but there is a car manufacturer. The best way to let your car’s life last a long time is then listen to the recommendations that are good for your car.

What is 10w30?

10w30 is a car engine oil that has a viscosity of 10. It’s made up of 30% polyalphaolefin (PAO), which is a synthetic base oil. It’s an SAE grade, which means it has been tested for viscosity at low temperature and high temperature.

It is a specific type of motor oil, and it’s designed to help your engine work at its best.

Motor oil is a complex mixture of different chemical compounds, and the 10w30 designation means that this particular formulation has a viscosity rating of 10 (that is, it’s very thin) when measured at operating temperature and a viscosity rating of 30 (that is, it’s very thick) when measured at low temperature.

In practice, this means that 10w30 motor oil can flow easily through your engine at high temperatures but remain viscous enough to keep your engine protected at low temperatures.

10w30 major specification

10w30 is a motor oil that’s designed for use in vehicles with gasoline engines. It’s typically used in light-duty trucks, such as those used for personal transportation or commercial purposes.

The 10w30 designation indicates that this particular type of motor oil has a viscosity rating of 10 weight units (WU), while the 30 refers to its pour point, which is the temperature at which this oil will begin to flow freely.

The viscosity rating of an oil is based on how much force it takes to move one gram of fluid through a tube over a distance of one centimeter. The higher the number, the thinner the fluid will be; and the lower the number, the thicker it will be.

So, the “10” means the oil has a kinematic viscosity between 6.3 and 9.5 mm2/s at 100°C (212°F). The “30” means it has a kinematic viscosity between 3.3 and 5 mm2/s at -40°C (-40°F).

The pour point of an oil is based on how many hours it takes for an oil sample to solidify at 0 degrees Celsius (32°F). Oils with lower pour points tend to have more additives than those with higher pour points; however, their ability to lubricate your engine may be compromised if you don’t change them frequently enough because they can’t maintain their viscosity at low temperatures.

Benefits of 10w30

The 10w30 has a viscosity that’s high enough to allow your engine to warm up and run smoothly but low enough that it won’t cause your engine to overheat or wear out prematurely. This makes it great for all-season driving, where you’ll need some extra protection from cold temperatures and high heat but don’t want to compromise on fuel efficiency or power in the summer months.

The main benefit of 10w30 oil is that it has a very high viscosity index, which means it flows well at cold temperatures and helps keep your engine warm in the winter. The viscosity also helps protect your engine from wear when it’s hot outside.

Also, the 10w30 oil also has many detergent additives to clean dirt, sludge, and other contaminants out of your engine. This helps keep things running smoothly and prevents corrosion.

What is 5w30?

5w30 is a type of oil that you can use in your car. It is typically used in older cars, but it’s also sometimes recommended as a high-mileage oil for newer vehicles.

The “5” refers to the viscosity grade, which indicates how thick the oil is at operating temperature. The “30” represents the SAE viscosity rating (in this case, 30). You can think of this as how far you can push the car before it starts to feel like it’s slipping.

Usually, 5w30 oils are made from synthetic blends, but they’re not pure synthetics or pure mineral oils. They may contain a small number of additives as well.

5w30 major specification

The 5W30 oil is a weight classification for engine oil. It is a viscosity grade of SAE 5w30. The “W” stands for winter, and “30” refers to the viscosity at 212°F (100°C).

This viscosity grade is required by car manufacturers when you buy engine oil from them. It is an SAE specification that indicates that the lubricant has a viscosity of 5 CST at -40°C (-40°F) and 30 CST at 100°C (212°F).

This grade of oil is considered to be in the middle range, and it’s used in most vehicles. It has a viscosity index of 100, which means it’s good for all temperature ranges.

The major specifications for this grade include:

  • 100 weights, which means it will protect your engine in all temperature ranges
  • A wear protection rating of 70, which means it can prevent wear on your engine by keeping friction down to a minimum
  • An oil flow rate of 12.0 milliliters per minute at 40 degrees Celsius

Benefits of 5w30

The benefits of 5w30 are endless. The 5w30 grade is designed to provide the most protection for your car’s engine in a variety of conditions. It’s perfect for both cold and hot weather and protects against wear, corrosion, and oxidation.

Some of the benefits include:

Better lubrication: 5w30 will reduce the amount of friction and wear on your engine. This can increase your fuel economy by up to 3%!

Reduced emissions: 5w30 is designed to reduce harmful emissions. It’s also been shown to lower CO2 emissions by as much as 5%.

Better engine performance: 5w30 provides better lubrication and reduces friction, which improves overall engine performance.

Can I use 10w30 instead of 5w30

Can you use 10w30 instead of 5w30?

No, it’s not safe to use 10w30 in place of 5w30. The main reason is that the viscosity of 10w30 is much lower than that of 5w30. The viscosity is how thick or thin the oil is, and it determines how well it maintains consistency under pressure, which is important for keeping your engine running smoothly.

So, if you’re using 10w30 instead of 5w30, you could be putting your engine at risk of getting too hot, which can damage it.

Difference between 10w30 and 5w30

The difference between 10w30 and 5w30 is that the first number refers to the weight of the oil, while the second number refers to how vicious it is. With a higher viscosity, your engine will run more smoothly at higher temperatures.


The detergency of motor oil is a measure of how well it cleans the engine. It’s important because when your engine isn’t properly cleaned, it can cause damage to your car.

The 5w30 oils have higher detergency than 10w30 oils, so they are better at getting rid of dirt and grime that can build up in your engine.

Anti-wear properties

The main difference between 5w30 and 10w30 is the anti-wear properties. The 5w30 oils contain more anti-wear additives than 10w30, which means that they are better at preventing wear in your engine.

The anti-wear properties of the oil can be measured by its zinc level and its sulfur content. The higher the zinc level and the lower the sulfur content, the better an oil will be at preventing wear.

Foam control

The difference between 10w30 and 5w30 is the amount of foam control. The 5w30 is designed to produce less foam than the 10w30, so it’s more suited for use in newer, high-efficiency engines. The 10w30 has a higher viscosity index (VI), which means it can be used in both older and newer engines, because it has better film strength and shear stability.

Viscosity index improvers

The viscosity index improvers in 5w30 and 10w30 oil are different. Viscosity index improvers, or VIIs, are additives that help to increase the viscosity of the oil at high temperatures. They keep the oil from thinning too much, which means lower fuel consumption and better engine performance for your car.

In a 5w30 oil, VIIs are mostly made up of polyalphaolefins (PAO), which are synthetic compounds. In a 10w30 oil, VIIs are mostly made up of paraffinic hydrocarbon resin solid solutions (PHRS), which are derived from petroleum distillates.

What happens if you put 10W 30 instead of 5W 20?

If you put 10W 30 instead of 5W 20, you’ll probably notice some things. The car will be harder to start and run, and it may also have trouble moving. Over time, the engine will wear out more quickly than it would if it were running on the proper oil. This is because the viscosity of 10W 30 oil is much higher than that of 5W 20 oil.

Is it OK to mix 10w30 with 5w30?

It’s really not a good idea to mix different weight oils. You’ll see in your owner’s manual that the manufacturer recommends using 5w30 or 10w30, and they probably have their reasons.

To start, there are differences between these two grades of oil. The 10w30 is going to be thicker than the 5w30, so if you mix them together, you’re likely to get an oil that’s too thick for your engine.

That means that it could take longer for your engine to reach peak operating temperature, which could decrease its performance and even cause damage over time. In addition, there’s also a chance that this extra thickness will cause sludge to develop in your engine—and we know how bad sludge is for engines.

Finally, even if you don’t notice any problems right away (like decreased performance), mixing these two different weights of oil could lead to varnish buildup on valves and other parts of your engine that would eventually restrict their movement and make them less efficient at doing their job: turning fuel into power.

Can I use 10w30 instead of 5w30

Is 10W30 better for high mileage?

Yes, 10W30 is better for high mileage. The 10W30 viscosity grade oils are designed to offer the best protection at higher temperatures while still providing the proper lubrication to your engine. This makes them ideal for cars that have high mileage and/or are driven in hot weather conditions.

So, while 10W30 may be better for high mileage in general, it’s best to have an expert take a look at your specific car before deciding which type of oil is best for you. They’ll be able to tell you what kind of driving conditions you’re likely to encounter and give advice about what kind of oil will work best for those conditions.

Is 5w30 better for older cars?

You may have heard that 5w30 is better for older cars, but that’s not true. The fact is, any weight class oil can be used in any vehicle. The difference between 5w30 and 5w20 is simply the amount of viscosity modifier in the base oil, and it’s what makes the oil more viscous at cold temperatures and less viscous at hot temperatures. The viscosity modifier isn’t just for older cars; it’s for all vehicles.

The reason people think 5w30 is better for older cars is because when you’re using a heavier weight class oil (like 10w40), you’re using up your engine’s reserve capacity to lubricate itself properly. If you use a lighter-weight class oil (like 5w30), your engine has more reserve capacity to keep itself running smoothly even as it ages.


One of the questions I hear from people is, can I use 10w30 instead of 5w30, and this page gives the answer to that question. When you’re buying motor oil, it’s important to know what kind of car you have and what kind of oil it needs. If you’re not sure, check its owner’s manual or look up its make and model online. The type of oil your car needs is usually indicated on the dipstick or in the owner’s manual. More information do you want to hear? Contact us!