A temperature 5o Fahrenheit higher than the temperature at which crude oil or a refined product stops flowing
Lowest temperature at which an oil or distillate fuel is observed to flow, when cooled under conditions prescribed by test method ASTM D 97 The pour point is 3°C (5°F) above the temperature at which the oil in a test vessel shows no movement when the container is held horizontally for five seconds
The lowest temperature at which an oil or other liquid will pour under given conditions
using ASTM D 97, the lowest temperature at which the oil can be poured Also, using FTM 203, the stable pour point is the lowest temperature at which an oil will remain fluid after being subjected to a cyclic temperature variation for six days
The lowest temperature in 5 °F increments at which an oil will flow This is due to wax build up in the oil when it begins to chill Usually, about 10°F above the pour point, the wax begins to develop and this is called the FLOW POINT in oils In diesel fuel, when wax begins to form, it is called the CLOUD POINT The main concern about pour point is start up temperatures and possible cavitation of pumps, plugging of filters, or wear in engines due to lack of oil Example: if the pour point of a hydraulic oil is 0°F, then the wax will begin to form at around 10°F and the oil is solid at -5°F If you agitate the oil, such as a hydraulic on a vehicle, you may be able to get the pour point down to around -20°F To melt the wax, you have to get the temperature up to around 85°F Up to that point, you will plug filters with wax