Pour point is a term referring to the lowest temperature at which a liquid lubricant, such as oil, can flow under specific conditions. At this temperature, the lubricant becomes too thick and viscous, making it difficult to pour or flow. Pour point is an important characteristic to consider in lubricants, especially those used in cold weather or applications requiring low-temperature performance. A lower pour point indicates that the lubricant has better low-temperature fluidity, allowing it to continue to provide adequate lubrication even in cold conditions.
Pour point refers to the physical property of a petroleum or petroleum product, the temperature at which the substance begins to change from a liquid to a gas under standard conditions.
Pour point indicates a product’s ability to flow and lubricate under low temperature conditions. This is an important characteristic to consider, especially for applications where the lubricant is used in cold climates or exposed to low temperatures. The lower the pour point, the better the low-temperature performance and fluidity of the lubricating oil.
The concept of pour point is very important for the storage and use of petroleum products. For example, in winter, the pour point of petroleum products increases due to lower temperatures. If the temperature is below the pour point of a petroleum product, the petroleum product will begin to solidify and lose fluidity. Therefore, it is important for equipment that uses petroleum products, such as cars or airplanes, to know the pour point of the petroleum products they use.
The pour point is usually measured by the Pensons method or the Rotational Viscometer (RV) method.