What is the lowest temperature at which a lubricant will flow called?

The term used to describe the lowest temperature at which a lubricant will flow is known as the pour point. Understanding pour point is crucial for applications involving lubrication, especially in environments where temperatures can drop significantly. At temperatures below the pour point, the lubricant may become too thick or gel-like, which can lead to inadequate lubrication and potentially damage mechanical components.

The pour point is essential for ensuring reliability and performance in equipment, as it directly affects the lubricant's ability to circulate and provide necessary lubrication. Therefore, knowing the pour point helps in selecting the right lubricant for a specific application, ensuring that it remains effective under varying temperature conditions.