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What is Pour point?

April 26, 2017point pour

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What is Pour point?

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The ability of oil to flow at low temperatures. 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.

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The pour point of an oil is the lowest temperature at which the oil will just flow, under standard test conditions. The failure to flow at the pour point is usually attributed to the separation of waxes from the oil, but can also be due to the effect of viscosity in the case of very viscous oils. This test is required for HSD and FO. Pour point requirement is 6 deg C for Normal diesel and -12 deg C for winter grade diesel.