Significance and Use
5.1 This bench test method is intended to produce comparable oil aging characteristics to those obtained with ASTM TMC Sequence IIIGA matrix reference oils 434, 435, and 438 after aging in the Sequence IIIG engine test.
5.2 To the extent that the method generates aged oils comparable to those from the Sequence IIIG engine test, the measured increases in kinematic and MRV viscosity indicate the tendency of an oil to thicken because of volatilization and oxidation, as in the Sequence IIIG and IIIGA (see Appendix X1 in Test Method D7320) engine tests, respectively.
5.3 This bench test procedure has potential use in specifications and classifications of engine lubricating oils, such as Specification D4485.
5.4 The results of this test method are valid when seeking qualification of oils against published specifications only when run on a test stand that has successfully met the calibration requirements specified under the TMC’s ROBO test monitoring program.
Scope
1.1 This test method describes a bench procedure to simulate the oil aging encountered in Test Method D7320, the Sequence IIIG engine test method. These aged oils are then tested for kinematic viscosity and for low-temperature pumpability properties as described in the Sequence IIIGA engine test, Appendix X1 of Test Method D7320.
1.2 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.2.1 Exceptions—There are no SI equivalents for some apparatus in Section 6, and there are some figures where inch units are to be regarded as standard.
1.3 This test method is arranged as follows:
Section
Scope
1
Reference Documents
2
Terminology
3
Summary of Test Method
4
Significance and Use
5
Apparatus
6
Reagents and Materials
7
Hazards
8
New and Existing Test Stand Calibration
9
Procedure
10
Cleaning
11
Calculations and Determination of Test Results
12
Report
13
Precision and Bias
14
Keywords
15
Annexes
ASTM Test Monitoring Center: Organization
Annex A1
ASTM Test Monitoring Center: Calibration Procedures
Annex A2
ASTM Test Monitoring Center: Maintenance Activities
Annex A3
ASTM Test Monitoring Center: Related Information
Annex A4
Reaction Vessel
Annex A5
Reaction Vessel Head
Annex A6
Reaction Vessel-to-Head Seal
Annex A7
Agitator Turbine Blade
Annex A8
Agitator Packing Gland
Annex A9
Nitrogen Dioxide Graduated Tube
Annex A10
Vacuum System Plumbing
Annex A11
Vacuum Trap Condensers
Annex A12
Setting the Vacuum Control Valve
Annex A13
Appendixes
Sample Preparation and Addition
Appendix X1
Charging the Liquid Nitrogen Dioxide
Appendix X2
Nitrogen Dioxide Precision Needle Valve
Appendix X3
Example of an Assembled ROBO Apparatus
Appendix X4
Information Package to Aid Setting Up a New Robo Apparatus
Appendix X5
Dilute Nitrogen Dioxide in Air Option Information
Appendix X6
Time-Averaged Subsurface Air Flow Rate
Appendix X7
1.4 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. Specific warning statements are given in Sections 7 and 8.
1.5 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.
