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ASTM D4683-10

Historical Revision

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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1.1 This test method covers the laboratory determination of the viscosity of engine oils at 150 °C and 1.0·106 s1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.


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.

SDO ASTM: ASTM International
Document Number D4683
Publication Date Oct. 1, 2010
Language en - English
Page Count 12
Revision Level 10
Supercedes
Committee D02.07
Publish Date Document Id Type View
June 1, 2020 D4683-20 Revision
Jan. 1, 2017 D4683-17 Revision
Oct. 1, 2013 D4683-13 Revision
Oct. 1, 2010 D4683-10 Revision
July 1, 2009 D4683-09 Revision
Feb. 1, 2004 D4683-04 Revision
Jan. 1, 1996 D4683-96 Revision