ASTM D5293-20

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Standard Test Method for Apparent Viscosity of Engine Oils and Base Stocks Between -10 oC and -35 oC Using Cold-Cranking Simulator
standard by ASTM International, 06/01/2020



1.1 This test method covers the laboratory determination of apparent viscosity of engine oils and base stocks by cold cranking simulator (CCS) at temperatures between -10 °C and -35 °C at shear stresses of approximately 50 000 Pa to 100 000 Pa and shear rates of approximately 105 to 104 s-1 for viscosities of approximately 900 mPa·s to 25 000 mPa·s. The range of an instrument is dependent on the instrument model and software version installed. Apparent Cranking Viscosity results by this method are related to engine-cranking characteristics of engine oils.

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