Superseded
Standard
Historical
ASTM D4683-10
Standard Test Method for Measuring Viscosity of New and Used Engine Oils at High Shear Rate and High Temperature by Tapered Bearing Simulator Viscometer at 150 °C
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Summary
1.1 This test method covers the laboratory determination of the viscosity of engine oils at 150 °C and 1.0·106 s−1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.
Significance and Use:
Viscosity values at the shear rate and temperature of this test method have been indicated to be related to the viscosity providing hydrodynamic lubrication in automotive and heavy duty engines in severe service.
The viscosities of engine oils under such high temperatures and shear rates are also related to their effects on fuel efficiency and the importance of high shear rate, high temperature viscosity has been addressed in a number of publications and presentations.
Technical characteristics
| Publisher | American Society for Testing and Materials (ASTM International) |
| Publication Date | 10/01/2010 |
| Collection | |
| Page Count | 12 |
| Themes | Lubricants, industrial oils and related products |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
Replaces
Previous versions
01/02/2004
Superseded
Historical
01/01/1996
Superseded
Historical