Is 5W40 Thicker Than 5W30?

What’s the difference between 5W30 and 5W40 motor oil? Both of them contain the same type of oil, but they are different in other ways. The difference between 5W30 and 5W40 is primarily one of flow and pressure. This makes 5w30 a better choice for hot climates, while 5W40 is better for colder climates.


When choosing engine oil, you need to consider the temperature range in which it is used. For example, if it’s cold, it needs to have a low viscosity, while if it’s hot, it needs to have a high viscosity. 5W30 is one example of a universal motor oil, which works effectively at both low and high temperatures. It also helps to reduce overheating in moving parts by absorbing heat from the engine and preventing oxidation. The thickness and weight of an oil will affect its performance in the engine, as will the temperature.

The main differences between 5W30 and 5W40 engine oils are the operating temperature ranges they are designed to cover. While 5W30 performs well in lower temperatures and is ideal for cold climates, 5W40 is better suited to higher mileage engines. It also has better fuel efficiency.

While 5W30 is more popular, 5W40 is not as well-known. However, it protects against sludge build-up, prolongs engine life, and protects engine components in cold weather. It also performs well in hot weather, as it moves well through the engine components. When deciding between 5W30 and 5W40, you should first check the viscosity of each oil. This is crucial, because each oil performs differently in different temperatures.


If your vehicle was designed for 5W30 oil, but now you’ve changed your mind, you may want to go with 10W40 oil. The difference between 5W30 and 10W40 is only in viscosity. The latter is thicker and will thin more slowly than the former. Both oils work well with different types of engines, so you can find a solution that suits your needs.

Both motor oils can perform well at different temperatures and will be safe to use. However, 5W30 motor oil is more suitable for high temperatures, while 5W40 is more suitable for low temperatures. Regardless of which you choose, you will be able to get a long life out of your vehicle.

Engine oils with different viscosity are designed for different types of weather and temperatures. In Singapore, the climate can play an important role in engine oil selection. Colder temperatures require thinner oils. On the other hand, hotter temperatures require thicker oils. Therefore, you should consider choosing a multi-grade oil, such as 10w or 20w.

For the most part, 5W30 is an excellent oil for summer. It has the right viscosity range, and reduces friction and wear. As a result, it’s better for fuel efficiency in both summer and winter. 5W30 is also compatible with both petrol and diesel cars.


When comparing motor oil viscosities, it is important to keep temperature in mind. While 10W30 and 5W40 have similar viscosities in warm and cold temperatures, they are significantly thicker at higher temperatures. Therefore, when using oil in vehicles in extreme cold and hot temperatures, it is advisable to use 10W30.

A higher viscosity oil prevents the passages of oil from wearing and is therefore recommended for older vehicles and vintage engines. The higher viscosity oil, however, is not a good choice for modern engines, as it adds extra stress on the oil pump. However, it is beneficial for vintage engines, as it provides adequate lubrication and deals with aging seals and components.

5W30 and 10W30 engine oils both have similar SAE ratings. The first digit indicates the viscosity at low temperatures, while the second digit indicates the viscosity at high temperatures. However, if the temperature drops drastically, the viscosity of the oil changes. In cold climates, the thinner oil is more lubricating, while the thicker oil is suitable for hotter climates.

In addition to the viscosity, engine oil can also impact the performance of an engine. The additional resistance created by high-viscosity oils can increase fuel consumption and reduce fuel efficiency. This is why a 10W30 engine oil is better than 5W30. It can be used for older vehicles, but it is advisable to consult your vehicle manual to determine the best type of oil for your car’s specific model and engine type.


0W40 is thicker than 5W30 when it is cold, which is contrary to popular belief. It is actually 28% thicker than 5W30 at cold temperatures. Despite the difference in viscosity, both oils perform equally well when cold. That is why you should use the right oil for your vehicle, regardless of its cold viscosity.

When choosing motor oil for your vehicle, it is important to check the manufacturer’s recommendations and choose a suitable motor oil. While 5W30 will provide adequate protection for your vehicle’s engine, it may not be adequate for engines that require more viscosity. To avoid failure, you should always use motor oil recommended by your vehicle’s owner’s manual.

The viscosity of engine oil is measured in SAE units. This scale measures the viscosity of oil at varying temperatures, from a freezing point to a high-temperature working temperature. A lower viscosity means that the oil will liquefy at higher temperatures, which can affect the protection of your engine. On the other hand, a higher viscosity means a thicker oil.

When deciding on the right type of motor oil, you can either choose 5w30 or 0W40. Choosing the right one will depend on your driving habits, but the 0W40 oil is recommended for winter driving. While 5w30 is a good choice for most drivers, it is not ideal for cold weather driving. It is too thick for winter driving conditions.


If you’re looking for an engine oil that’s thicker than 5W30, you’ve come to the right place. 5W30 has two primary functions – it protects the gears while operating in any weather, and it functions in both hot and cold conditions. The thicker viscosity of 5W30 gives it superior protection compared to its thinner cousins.

It’s important to understand the difference between 5W30 and 5W40 engine oil. 5W30 is a multigrade oil with a viscosity range of five in winter and thirty in summer. The difference in viscosity between the two oils makes 5W30 the better choice for winter, while 5W40 is better for summer and less fuel efficient in winter. Despite the name, 5W30 is appropriate for both gasoline and diesel engines.

API viscosity rating

The API viscosity rating 5w40 indicates thicker oil than its counterpart 5w30. Oil viscosity depends on how easily the oil flows through an average orifice at normal temperature. However, the viscosity of motor oils varies considerably depending on the temperature. Hence, it is important to understand the viscosity chart before buying the oil for your car.

The viscosity of motor oil indicates how easily the oil flows through an engine. A 5w30 oil has a viscosity rating of nine to twelve millimeters per second (mm2/s), while 5w40 is thicker and has a viscosity rating of fifteen to twenty-five millimeters per second. Higher viscosity means a thicker oil, and a thicker oil has higher flow and pressure at higher temperatures.

There are several reasons for the difference between API viscosity ratings. For example, 5w30 is thinner than 5w40, so it can flow more easily through the engine, which results in lower fuel consumption. On the other hand, 5w40 has a wider temperature range, which makes it better for higher mileage engines.

Recommended oil for high mileage vehicles

High mileage oils are formulated to improve your car’s engine performance. These oils contain additives that protect against wear and tear while maintaining a high viscosity index. They also have special viscosity properties that keep engine bearings from getting squeezed too easily. High mileage oils also contain antioxidants, detergents, and other additives that decrease friction and wear. These additives help clean out engine grime and minimize friction, which helps prevent engine failure.

High mileage oils can cost more than conventional oils, but they do contain additional protection. The added ingredients will help restore engine performance and prevent leaks. The difference in price can be worth the extra money. For high mileage vehicles, it’s best to use a higher-quality, synthetic oil. It’s important to use the right oil for your vehicle based on your driving style and location.

High-mileage engines are particularly demanding and require special care. These engines have many moving parts. When the oil becomes degraded after thousands of miles, it loses lubrication capacity and will cause the parts to wear out and decrease car performance. Changing oil frequently can help your car’s engine last longer and perform better.