ASTM D4684 Standard Test Method for Determining the Yield Stress and Apparent Viscosity of Low-Temperature Engine Oils

ASTM Tests

ASTM D4684 Standard Test Method for Determining the Yield Stress and Apparent Viscosity of Low-Temperature Engine Oils

EUROLAB laboratory provides testing and compliance services within the scope of ASTM D4684 standard. This test method covers the measurement of the yield stress and viscosity of engine oils after cooling to the final test temperature between –45°C and –10°C for over 40 hours at controlled speeds.

ASTM D4684 Standard Test Method for Determining the Yield Stress and Apparent Viscosity of Low-Temperature Engine Oils

This test method includes two procedures; Procedure A includes various equipment and procedural changes from test method D4684–02 that have been shown to improve the accuracy of the test, while Procedure B is unchanged from test method D4684–02.

In addition, Procedure A applies to devices that use either thermoelectric cooling technology or recently produced direct cooling technology for device temperature control. Procedure B may use the same instruments used in Procedure A or cooled with methanol circulation.

This test method applies to unused oils, sometimes called fresh oils, designed for both light-duty and heavy-duty engine applications. It has also been shown to be suitable for used diesel and gasoline engine oils. Applicability to petroleum products other than motor oils has not been determined.

Values ​​stated in SI units should be accepted as standard. No other units of measurement are included in this standard.

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

EUROLAB assists manufacturers with ASTM D4684 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.

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