engine-oil-grades-explained

1 год назад

This video explains the meaning of SAE viscosity grades in motor oil, focusing on the "W" in multi-grade oils like 5W30. The speaker clarifies that "W" stands for "winter" and explains the difference between cold cranking and high-temperature viscosity measurements. The video also delves into the SAE J300 standard, which defines these viscosity grades and their significance for engine performance and fuel economy.