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ASTM D4683-20 + Redline

ASTM D4683-20 + Redline

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 ,s−,1 using a viscometer having a slightly tapered rotor and stator called the Tapered Bearing Simulator (TBS) Viscometer.2

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