Скачать или смотреть 10W40 Vs. 10W50 Engine Oil Comparison

10W-40 and 10W-50 are multi-grade engine oils that perform similarly in cold-start conditions but differ in high-temperature behavior, with 10W-50 offering better viscosity retention and protection under extreme heat, load, or high-RPM conditions. While 10W-40 is ideal for daily driving, modern engines, and fuel efficiency—especially in temperate or cold climates—10W-50 is better suited for high-performance vehicles, off-road use, towing, motorcycles, and older or high-mileage engines where extra film strength and shear stability are needed. Both oils meet key industry certifications (API SP, ACEA A3/B4, etc.), but users should choose based on climate, driving style, engine type, and manufacturer recommendations rather than assuming “thicker is always better.”

0:00 - Understanding Viscosity Ratings (10W-40 vs 10W-50)
0:52 - Performance: Cold Starts vs. High Temperatures
1:31 - Shear Stability, Volatility, and Fuel Economy
2:08 - Engine Wear Protection & Vehicle Compatibility
2:45 - The Trade-off Between Protection and Fuel Efficiency
3:09 - Which Oil is Best for Your Climate?
3:42 - Recommended Applications: Daily Drivers vs. Performance Vehicles
4:37 - What Do Car Manufacturers Recommend?
5:15 - How to Select the Right Oil for Your Needs
5:54 - Summary: Cost vs. Performance
6:17 - Common Misconceptions About Motor Oil
6:54 - The Importance of Oil Certifications (API, ACEA, OEM)
7:36 - Final Recommendation & Conclusion