5W20 vs 5W30

Viscosity:

• 5W-20: Thinner at both cold and operating temperatures. Provides less resistance in the engine.
• 5W-30: Slightly thicker at operating temperatures, offering a bit more resistance but potentially better protection.

Temperature Performance:

• 5W-20: Better for fuel economy and suitable for moderate climates. Provides good cold-start performance and efficiency.
• 5W-30: Offers slightly better protection at higher temperatures and is suitable for a wider range of climates.

Engine Suitability:

• 5W-20: Often used in newer engines designed for better fuel efficiency and lower viscosity oils.
• 5W-30: Commonly used in a variety of vehicles, especially those that need better protection under stress or in higher temperatures.

Summary:

• 5W-20: Ideal for modern engines prioritizing fuel economy and in moderate climates.
• 5W-30: Suitable for a broader range of conditions and offers slightly better protection under higher temperatures.