ASTM D8185-18
Standard Guide for In-Service Lubricant Viscosity Measurement

Standard No.

ASTM D8185-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D8185-23

Latest

ASTM D8185-23

Scope

1.1 Significance and Determination of Viscosity—The purpose of this guide is to provide sufficient knowledge for a person with some technical background in lubrication or condition monitoring from which they can determine the best choice for measuring viscosity of an in-service oil. Such information from this guide should enable the user to engage in productive discussions with colleagues, service providers, managers, and service personnel about obtaining and using information on and from viscosity. There are a number of different approaches to viscometric measurement, and this guide is intended to be a helpful resource in selecting the most appropriate viscometric approach to gain information for the in-service fluid. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 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. 1.4 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.

ASTM D8185-18 Referenced Document

• ASTM D2983 Standard Test Method for Low-Temperature Viscosity of Lubricants Measured by Brookfield Viscometer
• ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• ASTM D4378 Standard Practice for In-Service Monitoring of Mineral Turbine Oils for Steam and Gas Turbines
• ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)
• ASTM D446 Standard Specifications and Operating Instructions for Glass Capillary Kinematic Viscometers
• ASTM D4683 Standard Test Method for Measuring Viscosity at High Shear Rate and High Temperature by Tapered Bearing Simulator
• ASTM D5133 Standard Test Method for Low Temperature, Low Shear Rate, Viscosity/Temperature Dependence of Lubricating Oils Using a Temperature-Scanning Technique
• ASTM D5293 Standard Test Method for Apparent Viscosity of Engine Oils Between -5 and -35^oC Using the Cold-Cranking Simulator
• ASTM D5478 Standard Test Methods for Viscosity of Materials by a Falling Needle Viscometer
• ASTM D6224 Standard Practice for In-Service Monitoring of Lubricating Oil for Auxiliary Power Plant Equipment
• ASTM D6299 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance*， 2023-07-01 Update
• ASTM D6304 Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration*， 2020-12-01 Update
• ASTM D6616 Standard Test Method for Measuring Viscosity at High Shear Rate by Tapered Bearing Simulator Viscometer at 100 ��C*， 2024-04-21 Update
• ASTM D6896 Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Used Engine Oils at Low Temperature*， 2020-11-01 Update
• ASTM D7042 Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity)*， 2021-11-01 Update
• ASTM D7110 Standard Test Method for Determining the Viscosity-Temperature Relationship of Used and Soot-Containing Engine Oils at Low Temperatures*， 2024-04-21 Update
• ASTM D7279 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids by Automated Houillon Viscometer*， 2024-04-21 Update
• ASTM D7483 Standard Test Method for Determination of Dynamic Viscosity and Derived Kinematic Viscosity of Liquids by Oscillating Piston Viscometer*， 2021-01-01 Update
• ASTM D8092 Standard Test Method for Field Determination of Kinematic Viscosity Using a Microchannel Viscometer*， 2022-12-01 Update
• SAE AIR5704 Field Viscosity Test for Thickened Aircraft Anti-Icing Fluids

ASTM D8185-18 history

• 2023 ASTM D8185-23 Standard Guide for In-Service Lubricant Viscosity Measurement
• 2018 ASTM D8185-18 Standard Guide for In-Service Lubricant Viscosity Measurement