Difference Between 5w30 and 10w30 (With Table)

Be it any part of the automobile, lubrication works as a protective mechanism gearing them up for smooth functioning. Every engine requires some form of greasing to run ceaselessly by avoiding friction. In this case, we are discussing lubricant oil for engines based on their property called  “viscosity”  in chilling winters at different levels of temperature.

5w30 vs 10w30

The main difference between 5w30  and 10w30 is that the viscosity of 5w30 is less than that of 10w3 which makes it ideal to be used at places with low temperatures. 

Moreover, the letter ‘w’ denotes its viscosity grade in winters. Further, the number (5) preceding ‘w’ marks the consistency of the lubricant at low temperatures, and the number (10) succeeding ‘w’ refers to its consistency at a higher temperature.

The 5w30 lubricant has a viscosity grade of ‘5’(low viscosity) at lower temperatures and ‘30’ in it denotes its viscosity level (high viscosity) at higher temperatures. The ‘low viscosity’ means thin in consistency which supports easy flow in the engine. Similarly, we can say that it possesses thicker consistency, ‘high viscosity’ at higher temperatures.

The 10w30 lubricant has a viscosity grade of 10  (low viscosity) at lower temperatures and ‘30’ in it denotes its viscosity level (high viscosity) at higher temperatures. This lubricant is thin at such temperatures and vice-versa. It forms a layer over the moving parts of the engine to reduce friction.

Comparison Table Between 5w30 and 10w30

Parameters of Comparison5w3010w30
Liquidity levelIt is thinner at lower temperatures.It is thicker at lower temperatures as compared to 5w30.
Viscosity levelIt has a lower viscosity.It has a higher viscosity.
Temperature It works efficiently within the temperature range of -30 degrees Celsius to 35 degrees Celsius.It works well within the temperature range of -18 degrees Celsius to 30 degrees Celsius.
Vehicle typeIt is used in light-duty petrol and diesel engines.It is used by heavy-load hauling engines.
Characteristics5w30 provides good chilled weather starting.10w30 provides better sealing action.
Ideal usageIts usage helps in low consumption of fuels.It can be used in engines consuming biodiesel too.

What is 5w30?

5w30 is multigrade engine oil that is used to lubricate the engines of vehicles such as commercial automobiles. It is also known as the SAE 5w30 because it is named and numbered as per the set rules of the Society of Automotive Engineering. The name of the lubricant 5w30 is done in this way so that it represents the suitable weather, aptitude of flow (viscosity), and thickness of the oil.

5w30 is most suitable to be used in chilled winters for automobiles as it has a viscosity temperature of minimum -35-degree centigrade. 5 is the viscosity level of this oil. Furthermore, it also meets the requirements of ASI AS.

It forms a continuous layer of overall engine parts so that the friction between moving parts is reduced. They reduce the wear and tear of the engine during the start/stop operation while also keeping the engine cool. It also has Superior Thermal Ability which means that it can maintain its properties even in fluctuating temperatures. A very small amount of  5w30 is sufficient to lubricate the whole engine in one go.

What is 10w30?

10w30 is also used in engines of various vehicles to avoid wear and tear of motor parts. It is too known as the SAE 10w30 according to the set rules of SAE. 10 is the viscosity level of the fuel which suggests that it is thicker than 5w30 and therefore it is used in heavily loaded carriages and commercial goods preferably. The viscosity of this oil decreases with an increase in atmospheric temperature.

 Ironically, it is mostly used on summer days due to loss of viscosity in higher temperatures, contrary to what its name suggests. It lubricates the parts deeply and efficiently on summer days though it is also used in winters. Furthermore, it is also used for lubricating old engines.

10w30 engine oil also meets the needs of ASI AS. This oil also increases the durability and lifespan of engines by protecting the engine from getting rusted. It retains its viscosity even when the temperature experiences fluctuation. This lubricant is ideal to be used even in engines with biodiesel/biofuel.

Main Differences Between 5w30 and 10w30

  1. 5w30 is used in a wider range of temperatures for lubrication of engines. 10w30 is a similar lubricant oil but it is used for a small range of temperatures.
  2. The most visible difference between the two lies in tier viscosities. 10w30 is more viscous and thicker than 5w30 and for this reason, 5w30 can reach the difficult parts of the engine due to its thinness and flow rate.
  3. Comparing the two on their fluidity and temperatures, 5w30 covers a larger range of temperatures. On one hand, 5w30 remains in a less viscous state from -35 to 35 Degree centigrade. On the other hand, 10w30 covers a smaller range of temperatures from -16 to 30 Degree centigrade.
  4. Since 5w30 covers a wider range of temperatures, it is suitable as an engine oil for vehicles on winter days. Though 10w30 is applicable for a smaller range of temperature, it is still usable on summer days with higher temperatures.
  5. These two are used for different sets of vehicles. 5w30 is mostly used for light-duty and commercial vehicles and 10w30 is used in heavily loaded carriages and old engines.


Summing it all up, 5w30 and 10w30 both are engine oils mainly used for lubricating the engines of vehicles. Their usage depends on the type of climate one is into as the viscosity of these two oils varies depending upon the temperature. These lubricating not only decreases the friction between motor parts but also prevents rusting of the uppermost layer of the engines. One can choose between these two according to their vehicle, temperature, and engine type.


  1. https://www.sae.org/publications/technical-papers/content/2002-01-3530/
  2. https://citeseerx.ist.psu.edu/viewdoc/download?doi=