Motor Oils - Dynamic Viscosities
Viscosity of lube oil is determined by the Society of Automotive Engineers (SAE).
Lube oils can be multigrade or monograde where multigrade oils fulfills two viscosity specifications. Example SAE 10W-40 where 10W refers to low-temperature - or winter - viscosity and 40 refers to the high-temperature - or summer - viscosity.
SAE | Dynamic Viscosity (N s/m2) | |||
|---|---|---|---|---|
| Temperature (oC) | ||||
| 0 | 20 | 50 | 100 | |
| 10 | 0.31 | 0.079 | 0.020 | 0.005 |
| 20 | 0.72 | 0.170 | 0.033 | 0.007 |
| 30 | 1.53 | 0.310 | 0.061 | 0.010 |
| 40 | 2.61 | 0.430 | 0.072 | 0.012 |
| 50 | 3.82 | 0.630 | 0.097 | 0.015 |
- 1 N s/m2 = 1 kg/(m s) = 1 Pa s = 1000 cP
Download and print Dynamic Viscosity Chart - SAE vs. temperature
Related Topics
• Fluid Mechanics
The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time.
• Viscosities
Viscosities of products and chemical species at varying conditions.
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