This results in delayed lubrication, often referred to as the "critical warm-up phase," which can lead to increased friction, poor fuel economy, and premature engine wear. The "W" in the rating stands for "Winter," and the number preceding it indicates the oil's cold-temperature performance.
Understanding SAE Standards for Engine Protection
The number after the hyphen is tested at the high temperatures and shear forces found in a running engine. A lower number, such as 0W or 5W, means the oil remains thinner in the cold, allowing for easier starts and reduced wear during the initial moments of engine operation.
" Understanding what does SAE mean in oil is the first step in demystifying these labels. The Meaning of the "W" Contrary to popular belief, the "W" does not stand for "Weight," although it is often misinterpreted as such.
Understanding SAE Standards for Engine Protection
The number before the W is tested at extremely low temperatures to simulate a cold start. SAE is an abbreviation for the Society of Automotive Engineers, the organization that establishes the standards for oil viscosity.
More About What does sae mean in oil
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More perspective on What does sae mean in oil can make the topic easier to follow by connecting earlier points with a few simple takeaways.
