Quick Answer: What Is SAE Grade?

What is SAE viscosity grade?

Description.

The viscosity grade of a lube oil is determined by the Society of Automotive Engineers (SAE).

Oils can be separated into multigrade oils and monograde oils.

While the two numbers specify the SAE viscosity grade, the viscosity index shows the temperature related change of viscosity..

What does SAE 10w30 mean?

The 10W30 designation on engine oil means that the viscosity of the oil is rated at 10W when an engine is cold and 30 when the engine is hot. This is different than an oil labeled 5W30, which has a thinner viscosity when the engine is cold at 5W.

What does SAE 5w 30 mean?

The short answer:The numbers represent the viscosity of the oil and the W stands for WINTER. … In a 5W-30 for example, the number before the W describes the viscosity of the oil at low temperatures. The lower the number, the thinner the oil and the better the oil’s cold temperature/ cold start performance.

What is SAE 30 used for?

SAE 30 oil is typically used for smaller air-cooled engines, like the ones in small tractors, lawnmowers, and chain saws. Most motor oils today are multi-grade oils that will perform well in all seasons.

What does SAE 30 stand for?

Society of Automotive EngineersSAE 30 is a typical single-grade rating. That means that an organization called the Society of Automotive Engineers (SAE) ran the oil through a standardized tube-like device and timed how long it took, in seconds, to flow from one end to the other.

What does SAE grade mean?

The Society of Automotive Engineers (SAE) developed a grading system to designate the viscosity level of single grade and multigrade motor oils. In single grade oils, the lower the number, the better it flows at cold temperatures. Likewise, the higher the number, the thicker the oil.