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  • ASTM
    D7528-13 Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus
    Edition: 2013
    $148.51
    Unlimited Users per year

Description of ASTM-D7528 2013

ASTM D7528 - 13

Standard Test Method for Bench Oxidation of Engine Oils by ROBO Apparatus

Active Standard ASTM D7528 | Developed by Subcommittee: D02.B0.07

Book of Standards Volume: 05.04




ASTM D7528

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 .

1. 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 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 and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given in Sections 7 and 8 .

1.4 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

Reference Oil Testing and Test Stand Calibration

9

Procedure

10

Cleaning

11

Calculations and Determination of Test Results

12

Report

13

Precision and Bias

14

Keywords

15

Annexes

Reaction Vessel

Annex A1

Reaction Vessel Head

Annex A2

Reaction Vessel-to-Head Seal

Annex A3

Agitator Turbine Blade

Annex A4

Agitator Packing Gland

Annex A5

Nitrogen Dioxide Graduated Tube

Annex A6

Vacuum System Plumbing

Annex A7

Vacuum Trap Condensers

Annex A8

Setting the Vacuum Control Valve

Annex A9

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



2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants

D4485 Specification for Performance of Active API Service Category Engine Oils

D4684 Test Method for Determination of Yield Stress and Apparent Viscosity of Engine Oils at Low Temperature

D5293 Test Method for Apparent Viscosity of Engine Oils and Base Stocks Between -5 and -35C Using Cold-Cranking Simulator

D7320 Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIG, Spark-Ignition Engine

SAE Standard

SAE J300 Engine Oil Viscosity Classification

Keywords

evaporative loss; low-temperature pumpability; MRV viscosity; oil aging; oil oxidation; oil viscosity; ROBO test; sequence IIIG test; sequence IIIGA test; volatiles;


ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)


DOI: 10.1520/D7528

ASTM International is a member of CrossRef.

ASTM D7528

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ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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