GSO ASTM D5133:2024
Gulf Standard
Current Edition
·
Approved on
25 April 2024
·
Standard Test Method for Low Temperature, Low Shear Rate, Viscosity/Temperature Dependence of Lubricating Oils Using a Temperature-Scanning Technique
GSO ASTM D5133:2024 Files
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GSO ASTM D5133:2024 Scope
1.1 This test method covers the measurement of the apparent viscosity of engine oil at low temperatures.
1.2 A shear rate of approximately 0.2 s-1 is produced at
shear stresses below 100 Pa. Apparent viscosity is measured
continuously as the sample is cooled at a rate of 1 °C ⁄h over
the range −5 °C to −40 °C, or to the temperature at which the
viscosity exceeds 40 000 mPa·s (cP).
1.3 The measurements resulting from this test method are
viscosity, the maximum rate of viscosity increase (Gelation
Index), and the temperature at which the Gelation Index
occurs.
1.4 Applicability to petroleum products other than engine
oils has not been determined in preparing this test method.
1.5 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
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