Is 5w30 Thicker Than 5w20? Understanding Engine Oil Viscosity

Discover the difference between 5w30 and 5w20 engine oils and their impact on vehicle performance.

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Yes, 5w30 is thicker than 5w20. The '5w' signifies cold weather viscosity, while the '30' and '20' represent the oil's thickness at engine operating temperature. 5w30 is thicker under heat, offering better protection for older engines and high temperatures. Always check your vehicle manual for the recommended oil type.

FAQs & Answers

  1. What does 5w mean in engine oil? The '5w' indicates the oil's viscosity at low temperatures, ensuring it flows well in cold weather.
  2. Which oil is better for older engines? 5w30 is often recommended for older engines due to its thicker composition, providing better protection at high temperatures.
  3. Can I mix 5w30 and 5w20 oil? While it's not ideal, mixing 5w30 and 5w20 can be done in an emergency. However, check your vehicle manual first.
  4. How often should I change my engine oil? It's generally recommended to change your engine oil every 3,000 to 8,000 miles, depending on the oil type and vehicle age.

Watch More

For more insights on choosing the right engine oil, check out our related videos on oil types and their benefits for different vehicles.

  1. Which Motor Oil is Thicker: 5W30 or 5W20? Learn the key differences between 5W30 and 5W20 motor oil and find out which is thicker for optimal engine protection.
  2. Understanding the Difference Between 5w20 and 5w30 Engine Oil Learn the key differences between 5w20 and 5w30 oils and understand which is best for your vehicle.