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Read our primer articles on High Mileage Oil, Synthetic Oil and Kinematic Viscosity

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The standard for Sp Gr is 15 d C.

The problem is that liquids are sold in Lt or Gallons and not by weight. In warmer locations like UAE the volumes measured early morning or ad mid day will differ, as liquids expand due to warming/heat.

On the other hand the weight remains the same through out the day.

Consequently, a temp. correction, for ambient temperature has to be considered.

Hussam

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