The TRUTH About 0W 20 vs 5W 30 Oil (50 Engines Tested!)

About this video

• Video Title: The TRUTH About 0W 20 vs 5W 30 Oil (50 Engines Tested!)
• Channel: Car Care Pro
• Speakers: None explicitly named, but the tone suggests a single narrator.
• Duration: 14:09

Overview

This video explains the differences between 0W20 and 5W30 engine oils, presenting findings from a large-scale engine test. It aims to educate viewers on how oil viscosity impacts engine performance, longevity, fuel economy, and oil consumption, and to clarify why automakers might recommend thinner oils despite potential long-term drawbacks.

Key takeaways

• Oil Viscosity Matters: The numbers 0W20 and 5W30 indicate how oil flows in cold (W for Winter) and hot conditions, respectively. Lower numbers mean thinner oil at operating temperature.
• 50-Engine Test Results: While 0W20 showed better fuel economy (3.2%), it also resulted in significantly higher bearing wear (42%) and oil consumption (28%) compared to 5W30 over 150,000 miles. 5W30 showed better piston cleanliness and less timing chain stretch.
• Automaker Recommendations: Manufacturers often specify 0W20 to meet government fuel economy regulations and avoid fines, not necessarily for optimal engine longevity.
• 0W20 Use Cases: Best suited for very cold climates, short commutes, modern engines with tight clearances, and frequent oil changes.
• Avoid 0W20 If: You drive in hot climates, tow frequently, have a high-mileage engine, or drive aggressively, as the thin oil film can shear down and lead to increased wear.
• 0W30 as a Compromise: This viscosity offers the cold-start benefits of 0W20 with better high-temperature stability than 0W20, showing less wear and only a minor fuel economy penalty.
• Choosing the Right Oil: Consider your owner's manual (for acceptable ranges), climate, driving habits (towing, high RPMs), engine mileage, and the need for certifications like API, ILSAC GF6, or ACEA A5/B5. Full synthetics are recommended for longevity.