ASTM D8047-17 PDF

1.1 This test method evaluates an engine oil's resistance to aeration in automotive diesel engine service. It is commonly referred to as the Caterpillar-C13 Engine-Oil Aeration Test (COAT). The test is conducted under high-engine-speed (1800 r/min), zero-load conditions using a specified Caterpillar 320 kW, direct-injection, turbocharged, after-cooled, six-cylinder diesel engine designed for heavy-duty, on-highway truck use. This test method was developed as a replacement for Test Method D6894.

Note 1: Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.

1.2 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 Exception-Where there is no direct SI equivalent, for example, screw threads, national pipe threads/diameters, and tubing size.

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. See Annex A2 for general safety precautions.

1.4 This test method is arranged as follows:

 

Section

Scope

1

Referenced Documents

2

Terminology

3

Summary of Test Method

4

Significance and Use

5

Apparatus

6

Engine Liquids and Cleaning Solvent

7

Preparation of Apparatus

8

Engine Stand Calibration and Non-Reference-Oil Tests

9

Procedure

10

Calculation, Test Validity and Test Results

11

Report

12

Precision and Bias

13

Keywords

14

ASTM Test Monitoring Center Organization

Annex A1

Safety Precautions

Annex A2

Engine and Engine Build Parts Kit

Annex A3

Oil Temperature Control System

Annex A4

Engine Modifications and Instrumentation

Annex A5

External Oil System

Annex A6

Aeration Measurement System

Annex A7

Specified Units and Formats

Annex A8

ASTM TMC: Calibration Procedures

Annex A9

ASTM TMC: Maintenance Activities

Annex A10

ASTM TMC: Related Information

Annex A11

Engine Break-in and Silicon Passivation Procedure

Annex A12

Schedule for Taking Oil Samples and Carrying out Analyses

Annex A13

Determination of Operational Validity

Annex A14

Specification for PC-10 ULSD Fuel

Annex A15

Typical System Configuration

Appendix X1

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.

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Published :	05/01/2017
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