2022: Specific Gravity of Lube Oil (& Formula, Definition, Infographic)

Definition

The specific gravity of lube oil is the ratio of the density of lube oil to that of a reference substance (Usually water).

This information can be used to tell whether lube oil will float (or sink) if dropped in water (Buoyancy).

Formula

SG = ρlube oil / ρwater

Note: Both densities need to be in the same unit as they will cancel each other and produce SG.

Specific Gravity vs Density vs Specific Weight

There are important differences between density, specific weight and specific gravity. Follow these links to learn about the differences between them.

I will provide you the lube oil specific gravity in a dimensionless unit (Unitless) in this page. You may check how it converts to kg/m³ (SI unit), g/cm³, g/ml, kg/l, lb/ft³ by following the link below:

Specific Gravity of Lubricating Oil (Relative to Water)

SG = 0.8810 (15 °C)
(PetroCan97)

Source

Specific gravity values are not very useful. Why not check the density of engine oil (all units)?

My Specific Gravity Infographic

Put the lube oil specific gravity in perspective!

How about an incentive to share this post? (You will help other colleagues find this blog)

Download and enjoy my infographic:

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