Pour point definition
Pour point refers to the temperature at which the cooled sample can flow under specified test conditions; The freezing point refers to the maximum temperature of the oil product when the oil level of the cooled sample no longer moves under the specified test conditions, all expressed in ℃.
The physical meaning of pour point is one of the parameters reflecting the low temperature fluidity of oil products. The lower the pour point, the better the low temperature fluidity of oil products.
Pour point is used to measure the low temperature fluidity of lubricating oil and other conventional indicators. The pour point of the same oil product is a few degrees higher than the pour point. In the past, the pour point was commonly used, and the pour point is internationally used.
If the pour point or freezing point is too high, the low temperature fluidity of the oil will be poor. According to the pour point of oil products, people can consider the measures that should be taken when transporting, storing, receiving and dispatching under low temperature conditions, and can also be used to evaluate the low temperature service performance of some oil products.
The pour point of engine lubricating oil is affected by many factors such as oil quality and impurities. After a period of use, the pour point of engine lubricating oil will rise compared with that of new oil because of impurities such as water. If it is unqualified, replace it with new oil.
