Conversely, using oil that is too thin can lead to increased oil consumption and insufficient lubrication under load. Hot Temperature Performance (The Second Number) While the "W" focuses on cold flow, the second number addresses the oil’s stability under heat.
Understanding High Temperature SAE Viscosity Ratings
How to Choose the Correct SAE Rating Selecting the proper SAE grade is not a matter of preference but of adherence to engineering specifications. Upon the next ignition, the oil must circulate immediately to prevent metal-on-metal contact.
When an engine is turned off, oil drains back into the sump, leaving critical components dry. A 0W or 5W oil flows more readily in extreme cold than a 15W oil, reducing the time the engine spends without protection.
High Temperature SAE Viscosity and Its Impact on Engine Protection
Multi-Grade Oils When looking at a bottle of oil, the numbers on the label—such as 10W-30 or 5W-20—represent a multi-grade formulation designed to function in varying temperatures. Decoding the Numbers: Single vs.
More About What does the sae mean on oil
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