0w40 vs 5w30: Let’s compare!


0w40 vs 5w30


If you are up in the market for new engine oil for your vehicle, then you should be informed that the latest generation multigrade engine oil is all you need to help your engine.

Two of the best engine oils on the market are 0W40 and 5W30, which are suitable for a wide range of vehicles. Below we have compared the 0W40 and 5W30 to help you make an informed decision.

0W40 Vs 5W30 Engine Oil Comparison


0W40 Engine Oil

5w30 Engine Oil

Lower Viscosity



Higher Viscosity



Oil Thickness



Fuel Economy



Engine Wear



Suitable Weather

Hot (Summer) and Cold (Winter)

Cold (Winter)

Ideal Temperature

-40 to 40-degree celsius

-35 to 35 degrees Celsius

Oil Type



Life Expectancy

10,000 Miles

5,000 miles

Replacement Required

Before 8 to 9 thousand miles

Before 3 to 4 thousand miles










Vehicle Compatibility

Petrol and Diesel

Petrol, Diesel, and CNG

Ideal Engine

Turbocharged engines

Hydraulic Tappets-based engines




Thermal Stability



Oxidation Stability



Similarities Between 0W40 Vs 5W30 Engine Oil

Oil Type

The 0w40 and 5W30 don’t have a lot of similarities between them. The base material of these two engine oils is synthetic oil, which is a major similarity between these two oils.


When it comes to other additives, the 0w40 and 5w30 engine oil come with anti-wear, anti-foam, and anti-rust agents.

Difference Between 0W40 Vs 5W30 Engine Oil

Viscosity Grade

The greatest difference between the 0W40 and 5W30 engine oil is their viscosity grades. Both oils have different low and high-viscosity grades. The 0w40 engine oil comes with a lower viscosity grade of 0 and a higher viscosity grade of 40.

In contrast, 5W30 engine oil comes with a lower viscosity grade of 5 and a higher viscosity grade of 30.

Fuel Economy

Another major difference between the 0W40 and 5W30 engine oil is the fuel economy. The 0W40 engine oil offers better fuel economy due to the fact that it is thinner, which allows it to reduce friction as much as possible and improves the engine performs better in different driving situations, which then gets you better fuel economy than the 5w30 engine oil.

Engine Wear

When it comes to engine wear, the 0W40 engine oil has slightly more engine wear than the 5w30 engine oil. This is because the 0w40 engine oil is thinner, which increases engine wear between the engine components.

Suitable Weather Conditions

Considering the weather conditions is very important when choosing between the 0W40 and 5W30 engine oil.

The 0W40 has a slight advantage over the 5W30 engine oil because it can withstand hot as well as cold temperatures. Conversely, 5W30 engine oil is only suitable for cold weather conditions.

Temperature Range

When it comes to the temperature range, the 0W40 can withstand from -40 to 40-degree celsius temperature. A 5W30 engine oil, on the other hand, can handle temperatures as low as -35 degrees Celsius.

Life Expectancy

The 0W40 engine oil has a life expectancy of about 10,000 miles, whereas the 5W30 engine oil has a life expectancy of 5,000 miles. The 0W40 engine oil goes through a lot of tests in comparison to the 5W30 engine oil, which makes it more durable and last longer.

Engine Compatibility

The 0W40 engine oil is compatible with turbocharged petrol and diesel engines. On the flip side, the 5W30 engine oil is compatible with hydraulic tappets, petrol, diesel, and CNG engines.


The 0w40 engine oil creates the least amount of friction as it is thinner than the 5W30 engine oil. In comparison, the 5W30 engine oil creates slightly more friction than the 0w40 engine oil.

Thermal and Oxidation Stability

When it comes to thermal and oxidation stability, then again, the 0W40 engine oil has an advantage over the 5W30 engine oil as it performs better with excellent thermal and oxidation stability.

Pros and Cons of 0W40 Vs 5W30 Engine Oil

0W40 Engine Oil:



Better fuel economy

More engine wear

Suitable for hot and cold weather


Excellent temperature range


Least friction


5W30 Engine Oil:



Suitable for cold weather

Average fuel economy

Compatible with hydraulic tappets engines

Poor oil flow

Less engine wear


Which is Better Engine Oil: 0W40 Vs 5W30?

The 0w40 engine oil is better in comparison to 5w30 as it offers the least friction and an excellent temperature range. On top of that, it has a great life expectancy. Also, it is ideal to be used in cold and hot weather.

Read: 5w40 vs 10w30

Frequently Asked Questions:

Can you mix 0w40 with 5w30 or vice versa?

No, it is not recommended to mix both oils as they both have different viscosity.

Which engine is oil cheaper: 5w30 Vs 0w30?

Both engine oils are available at a similar price which ranges from $20 to $30, depending upon the brand.

What is the W means in 5W30 or 0W30?

W means winter in 5W30 or 0w30.


So, there is everything to know about the 0w40 and 5w30 engine oil. Hopefully, you will like our approach and will be able to get all the information about the engine oil comparison.

Our recommendation is to use the 0w40 engine oil in your car, especially if it is compatible with your car’s engine.

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