Can I Use 10w30 Instead of 5w30? 10w30 vs. 5w30 Motor Oil

You must use the right kind of motor oil for your engine's better performance. Each oil differs in its tolerance of bearing the high temperature. Also, the difference lies in its thickness and viscosity. Not using the recommended oil with the correct specs can harm your vehicle's engine. 

This article will explain what the values 10w30 and 5w30 mean. Also, we'll compare both types of oils, so you can know which one's better for your car. 

What Are 10w30 And 5w30 Motor Oils? 

The number 5 or 10 shows how conveniently the oil will pour at low temperatures. On the other hand, The number 30 represents the thickness of the oil under high temperatures. In a nutshell, these are the measurements for oil. The letter "w" represents winter. 5w30 is much thinner in viscosity as compared to the 10w30 engine oil. 

10w30 vs 5w30: Which One Is Better?  

10w30 Motor Oil

Known as multigrade engine oil, you'll find that 10w30 is perfect for heavy vehicles. When used in low temperatures, it would have a low viscosity with a grade of 10. And in high temperatures, this oil can maintain the engine's potential to its best with a viscosity grade of 30. Engines can rely on 10w30 for high-performance thanks to its excellent composite. 

5w30 Motor Oil

This multigrade motor oil has a viscosity grade of 5. So, this engine oil would be thin at low temperatures. The grade 30 indicates its thickness in high temperatures. 

10w30 Specs

When picking an engine oil, it's necessary to check its ACEA and API SN rating along with the viscosity grade. 10w30 is approved by the API SN. This oil protects the engine and boosts its performance. At high temperatures, it doesn't form any gel or sludge. Also, it is pretty suitable for after treatment. The rating as per ACEA should be A3/B4 or A3/B3 for 10w30 engine oil. 

5w30 Specs

Authorities like ACEA and API SN approve 5w30 engine oil, depending on various brands. This motor oil also fulfills the specifications of Ford, Porche, Mercedes Benz, and Volkswagen. 

10w30 Advantages

  • Safeguards engine from corrosion
  • Smoothens the clutch and gear functions 
  • Ideal for hot weather
  • Keeps the motor cool during the start/stop function 
  • Perfect for advanced fuels like biodiesel 
  • Reduces friction between the metal parts of the engine 

5w30 Advantages

  • This motor oil protects the engine from rust
  • It minimizes the friction between parts of the engine 
  • Increases the lifespan of the engine 
  • Offers excellent thermal stability 
  • Reduces the consumption of oil 
  • Ideal for gasoline engines, petrol engines, and diesel engines 
  • Best for cold weather 

10w30 Vs. 5w30: Pros and Cons


When it comes to performance, both oils do well. Both have the same grade of viscosity in high temperatures. But, 5w30 performs better in colder weather due to thinning. 10w30 is ideal for places with lower temperatures. 


5w30 provides superior lubrication compared to the 10w30. It is more suitable for light-duty automobiles, while 10w30 is ideal for heavy-duty vehicles used in the commercial sector. 

Depending on your location, weather conditions, and vehicle, you can choose which engine oil to use, or you can even mix them. Both oils are multigrade and provide optimal protection to the engine. 

Can I Use 10w30 Instead of 5w30?  

It is recommended to use motor oil recommended by your automobile's manufacturer. As 10w30 is thicker than 5w30, it'll flow slower than 5w30 in cold climates. It might be better not to use it then. But, there isn't much issue in average weather conditions if you want to use 10w30 instead of 5w30. 

Final Thoughts

10w30 and 5w30 have more or less the same properties. But, the main difference lies in their viscosity in low temperatures. You must follow the guidelines of your car's manufacturer and get the right engine oil.