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ASTM D4683-96

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 X 10 s -1 shear rate using a tapered bearing simulator-viscometer (TBS Viscometer) equipped with a refined thermoregulator system. Older TBS units not so equipped must use Test Method D4683-87.

1.2 The Newtonian calibration oils used to establish this test method cover the range from approximately 1.5 to 5.6 cP (mPa[dot]s) at 150°C.

1.3 The non-Newtonian reference oil used to establish this test method has a viscosity of approximately 3.5 cP (mPa[dot]s) at 150°C and a shear rate of 1 X 10 s -1 .

1.4 Applicability to petroleum products other than engine oils has not been determined in preparing this test method.

1.5 This test method uses the centipoise (cP) as the unit of viscosity. For information on the equivalent SI unit, the millipascal second (mPa[dot]s) is shown in parentheses.

1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number D4683
Publication Date Jan. 1, 1996
Language en - English
Page Count 6
Revision Level 96
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