This dual-rating system ensures the protective film remains stable from the moment you start the engine to the moment you turn it off. Conventional: Does the Base Matter?.
Understanding Viscosity Ratings and Oil Numbers Explained
Viscosity refers to the oil’s resistance to flow or its thickness; a low number indicates a thin, free-flowing liquid, while a high number indicates a thicker, more resistant substance. The Cold-Weather Indicator (The "W" Factor) The letter "W" stands for "Winter," and it is arguably the most critical part of the viscosity code for engine longevity.
The advent of multi-grade oils revolutionized engine protection by combining the benefits of two viscosities in one formula. This number, which appears before the "W," indicates the oil’s flow characteristics at extremely low temperatures, specifically during a cold start.
Understanding Viscosity Ratings and Oil Numbers Explained
Understanding what oil numbers mean is essential for protecting your engine and ensuring optimal performance. When you turn the key in freezing conditions, the oil is thick and sluggish; the lower this number, the faster the oil can circulate through the engine components.
More About What do oil numbers mean
Looking at What do oil numbers mean from another angle can help expand the discussion and give readers a second clear paragraph under the same section.
More perspective on What do oil numbers mean can make the topic easier to follow by connecting earlier points with a few simple takeaways.
