Difference Between 5W20 and 5W30

Choosing the right oil for your car engine is a critical decision. While it’s important to consult your owner’s manual for specific recommendations, it’s also important to understand the difference between 5W20 and 5W30 oil, so that you can make an informed decision. Read on to learn more about the differences between these two types of oil.

Viscosity

The most important difference between 5W20 and 5W30 oil is their viscosity. Viscosity is a measure of an oil’s resistance to flow and its ability to lubricate moving parts. Generally, 5W20 oil has a lower viscosity than 5W30 oil, which means it is thinner and better suited to cold weather. 5W20 oil is also better for maintaining fuel economy.

Temperature Range

The second difference between these two types of oil is the temperature range. 5W20 oil is designed to work best in temperatures between -20 and 40 degrees Celsius, while 5W30 oil is best suited for temperatures between -30 and 50 degrees Celsius. This difference in temperature range can make a big difference in how your vehicle operates.