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How to know if it is bad frozen oil

How to know if it is bad frozen oil

  • 2021-01-18

The quality of the frozen oil can be judged by the color of the oil. The normal color of mineral frozen oil is transparent and slightly yellowish, if cloudy or color is very deep in the oil, the impurity content and paraffin content are high. The normal color of ester synthetic frozen oil is transparent belt yellow, slightly darker than mineral oil. The higher the kinematic viscosity is, the darker the color is. When the viscosity reaches 220mPa. The color is brilliant yellow with reddish brown.


We can take a clean sheet of white paper, take out a little bit of the frozen oil, drop it on the white paper, and then watch the color of the oil. If the oil drops are light and evenly distributed, that means the frozen oil is of better quality, If dark dots or circles are found on the white paper, the frozen oil has deteriorated or is inferior frozen oil.



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