Pour Point

Basic Lubrication

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All lubricants and Newtonian fluids exhibit an increase in viscosity as temperatures decrease.   At a certain (very low) temperature, a lubricant may solidify also and cease to flow, and thus fail to lubricate.

Viscosity and temperature

Pour Point is therefore measured typically with lubricants, wherein Pour Point is the lowest (coldest) temperature that a fluid will still flow, though at a low flowability rate.  Normally, Pour Points of mineral-based lubricants are below zero (0) degrees Centigrade (example -10oC); synthetic lubricants, on the other hand, can provide pour points as low as -30 to -40oC.

pour point

While most lubricant applications are at elevated temperatures, Pour Point is significant property to consider for cold storage applications, and the food and beverage industries.

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