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.
ASTM D4683-10 History
ASTM D4683-17
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ASTM D4683-13
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ASTM D4683-10
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ASTM D4683-09
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