Updated at: 18-07-2022 - By: Lucas

It can be confusing and confusing to navigate the world of motor lubricants. There are so many different types of engine oil to choose from that it can be difficult at times.

However, if your vehicle has a hydraulic system, you should be aware of the oil’s involvement in the engine and other components.

When it comes to engine oil, what is the difference between SAE 30 and 10w30?

It’s a good idea to use either SAE 30 or 10W30 oil in your engine, however if your car has an older engine, you should use SAE 30. When picking an engine oil, you should take into account the temperature ranges, viscosity, density, additives, and pricing. These are the distinctions between several types of motor oil.

What 10W30 engine oil is and where can it be used

The viscosity of the 10W30 oil is indicated by the number 10 in the formula. for example, the rate at which oil drains from an engine after it has been turned upside down.

In order for oil to flow out of the engine at a sluggish rate, it must be highly viscous, while oil that flows more freely is less dense. It is common practice to refer to oil viscosity as “W” during the winter months, with the heaviest oil having a viscosity of 60W.

As a result, 10W30 oil falls somewhere in the middle when it comes to viscosity. The median viscosity means it will perform well year-round.

If your car’s engine has logged some kilometers, this oil is suitable for it, and it can even be used in heavier-duty engines.

What SAE 30 oil is and where can it be used

SAE 30 Oil

SAE stands for the Society of Automotive Engineers, which signifies that this oil is regulated by SAE and has a capacity of 30 quarts.

Your oil’s thickness is indicated by the numbers on the label. An SAE 30 oil is heavier in weight than an SAE 20 oil, for example As a result, you’re undoubtedly wondering, What does W stand for? In this context, W stands for Winter use of multiscale oil.

At all temperatures, SAE 30 oil behaves as a 30 weight oil. As a result, at low temperatures, the 30 weight oil becomes viscous. It will not be able to pass through the minuscule openings of your engine any more.

When it’s cold outside, 10w30 oil behaves differently. It behaves like 10 weight oil when the temperature of the 10w30 decreases. As a result, it will still be able to flow in the right direction. By heating the engine to the point where it behaves like 30 weight oil,

You can use oil at temperatures of up to 500 degrees Fahrenheit, and it is not a “tart” oil used in lawnmowers or four-stroke engines. Its texture will change as the temperature changes, yet its delicate nature will remain constant.

In order to ensure a tight seal around the engine, SAE 30 engine oil is designed for vehicles equipped with current filters and non-detersive lubricants. The SAE 30 oil was first used in pre-1950 light commercial four-stroke engines.

The oil can be used in gearboxes that require API GL-1 stuff oil. Because mineral-based oils may be combined with SAE 30 engine oil to create an oil mist, it’s a better choice if you’re looking for an oil that will perform well in hotter conditions.

Differences between 10W30 and SAE 30 Oil

1. Viscosity

So, if you turn the SAE 30 and 10W30 oils upside down, which one will simply flow out?

What determines the amount of energy required to stream the liquids, and how does temperature affect this?

Viscosity impacts the flow of fluids and is referred to as the “liquid thickness” in some contexts. There will be friction between atoms of the liquid and the solid contact surface as well as viscosity, which will alter the energy required for the liquid to flow.

When the temperature is low, the liquid becomes more slender because it is affected by temperature variations. Moreover, viscosity may be affected by pressure.

Because SAE 10W30 is less thick at low temperatures, it will be more viscous and more likely to stream. Instead of steaming easily in the winter, SAE 30 is less thick at high temperatures.

2. Density

This motor oil weighs 0. 8754 grams per cubic centimeter at 30 degrees Celsius (86 degrees Fahrenheit) and normal air pressure.

At 165. 6 degrees Celsius or 330 degrees Fahrenheit, 10W30, a heavy-duty engine oil, weights 0. 875 pounds per cubic meter. Since the SAE density is 9/10 and 10W30 is 8/10, you can put them both in the top 10.

3. Additives

A biodiesel-like viscosity and performance at high temperatures are provided by the 10W30 oil, which is smooth and delivers the optimum grip for the job.

This engine oil, despite its efficiency in any weather, has a lot of additives, and most people will not settle for it. Air-cooled engines, such as farm tractors, power tools, and motors, benefit more from SAE 30. There are less additives in SAE 30 oil, making it suited for daily use on hot days.

4. Operating temperature

As a general rule, SAE 30 engine oil should only be used in the spring, summer and pre-winter. When heated to 100 degrees Celsius (212 degrees Fahrenheit), the material’s kinetic thickness is indicated by the number ’30.

As a result, a motor’s working temperature rises at a rate of 9.3 mm per second. If you’re looking for an engine oil that works well in cold weather, the 10W30 might be the best option.

5. Price

In terms of value for money, SAE 30 is an excellent option because it is environmentally friendly, protects the engine from erosion, and has high LPSI safety. While the 10W30 is more expensive, it also provides superior protection and consistency for a lower cost.

Can I use 10W30 instead of SAE 30?

The SAE 30 can be replaced with the 10W30, which has a similar working life. You can use the 10W30 oil all year round, however the SAE 30 is only suitable for winter use. Both oils are good engine lubricants. SAE 30 is less expensive, but it also contains less additives.

Is 10W40 the same as SAE 30?

At high temperatures, both engine oils are the same, but if you look at the operating temperature, you’ll see that they’re not the same at all.


Engine oil lubricates moving parts and keeps the engine running smoothly, keeping your car in good shape. As a result, you should make sure that your car’s engine is running smoothly by using bright oil.

When it comes to lawnmowers, SAE oil is a good choice because of its ability to withstand high working temperatures. However, because it has little chemicals, it can efficiently protect the engine.

The 10W30 engine oil, on the other hand, performs well in cold conditions and is appropriate for heavy machinery that is used year-round.

Although it contains more additives than SAE 30, it is still superior. I wish you luck in your search for the best engine oil for your vehicle.