10W-30: What's The Meaning Behind Oil Viscosity Numbers?
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10W-30: What's The Meaning Behind Oil Viscosity Numbers?

5/16/2018

construction lubricants

According to a recent survey, up to 89% of lubrication professionals said they consider the viscosity index when selecting lubricants. The viscosity of oils like construction lubricants is essential to take into account because they play a key part in keeping an engine running and a machine in operation.

To give you a better idea of the importance of the viscosity of lubricants, here's a guide to help you understand the specifics behind oil viscosity numbers.

What are the differences in oil numbers?
It's critical to understand the viscosity ratings and detergents used in oils like transportation lubricants in order to properly keep an engine protected from friction and heat. It's for this reason that oil changes and oil maintenance are a top priority.

Unfortunately, one of the least understood parts regarding lubricants is the number system used to rate their viscosity. An oil's viscosity, or weight, indicates how thin or thick an oil is.

Your engine will need an oil that's both thick enough to work well once the engine gets hot and thin enough to work when it's faced with cold temperatures. The last thing you want is for your lubricant's viscosity to cause your engine to overheat or fail.

The temperature requirements for lubricants is a low of 0 degrees Fahrenheit and a high of 210 degrees Fahrenheit. These temperatures were set by the Society of Automotive Engineers (SAE).

A lubricant that meets the low-temperature requirements of the SAE has a W after their viscosity rating. Oils that meet high-temperature requirements have no letter after their viscosity rating.

An oil's viscosity is rated by heating the oil to a given temperature and then determining the length of time it takes for the oil to flow out of a specifically sized hole. Fast-flowing oils are given a lower rating whereas slow-flowing oils are given a higher rating.

An oil will typically become thinner when heated and thicker when cooled. Therefore, many operators will choose multi-viscosity, or multi-grade, oils for their engines. Multi-grade oils meet both low-temperature and high-temperature requirements through special additives.

It's essential to understand the viscosity of the oil you're choosing so that your engine runs as well as possible. To learn more about construction lubricants, synthetic lubricants, or aviation products, contact Santie Wholesale Oil Company today.

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