ASTM-D6984 2012

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D6984-12a Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine

Published By	Publication Date	Number of Pages
ASTM	2012	52

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Description

ASTM D6984-12a

Historical Standard: Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine

ASTM D6984

Scope

1.1 This test method covers an engine test procedure for evaluating automotive engine oils for certain high-temperature performance characteristics, including oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oils include both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, as well as in diesel engines.

Note 1—Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.

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 Exceptions—The values stated in inches for ring gap measurements are to be regarded as standard, and where there is no direct SI equivalent such as screw threads, National Pipe Threads/diameters, tubing size, or single source supply equipment specifications.

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 requirements prior to use.

1.4 This test method is arranged as follows:

Keywords

cam and lifter wear; deposits; engine oil; engine wear; high-temperature performance; oil consumption; oil thickening; oil viscosity; oxidation resistance; Sequence IIIF test; spark-ignition automotive engine; varnish; varnish deposition

ICS Code

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

DOI: 10.1520/D6984-12A

Additional information

Engine Coolant Jacket Cleaning (Flushing)	9.47
Air-to-Fuel Ratio Determination	6.14
Status of Test Stands Used for Non-Standard Tests	10.7
Blowby Flow Rate Determination	Annex A11
Sequence IIIF Blueprint Listing	Annex A13
Sequence IIIF Test Set Points and Control States	Annex A7
Thermocouple Location	6.13.1
Dipstick and Hole Plug	11.1
Significance and Use	5
Intake Manifold Cleaning	9.3
Engine Disassembly	12.2
Sequence IIIF Quality Index Upper and Lower Values	Annex A8
Blowby Flow Rate Measurement	11.11
Throttle Body	9.39
Exhaust Manifolds, Water-Cooled	9.41
Coolant Additive	7.3
Main Bearings	9.14
Cleaning of Engine Parts (other than the block and heads)	9.4
Blowby Flow Rate Measurements	12.9
Piston Fitting and Numbering	9.10
Engine Operating Procedure	11
Scheduled Shutdown	11.5
Testing of Reference Oils	10.2
Coolant Preparation	7.4
Crankshaft Sprocket	9.15
Engine Flywheel	9.42
Special Parts	9.7.2
Reporting of Reference Oil Test Results	10.4
Apparatus	6
Cylinder Head Cleaning	9.6
Flushing Tank	6.7
General Information	9.7.1
Injector Flow Testing	6.14.1
Fluid Conditioning Module Components	Annex A14
Condenser Cooling Systems	6.9
Coolant Charging	9.48
Fuel System	6.11
Load	10.8.7
Engine Oil Cooling System Schematic	Annex A15
Water Inlet Adapter	9.33
Air-to-Fuel Ratio Verification	11.10
Coolant Inlet Adapter	9.22
Parts Replacement	9.8
Scope	1
Test Fuel	7.1
Calibration	10
Engine Oil Quality Testing (80 h)	11.15
Pressure Checking of Engine Coolant System	9.43
Subject	Section
Guidelines For Hardware Subject To First In – First Out Criteria	Annex A16
Preparation of Parts for Rating of Sticking, Deposits, and Plugging	12.3
Report	13
Engine Start-up and Shutdown Procedures	11.3
Harmonic Balancer	9.19
Cylinder Head Installation	9.27
Temperature	10.8.3
Engine Speed and Load Control	6.5
Connecting Rod Bearings	9.20
Engine Oil Pump Priming	9.50
Ignition System	9.38
Condenser	9.34
Pressure	10.8.4
Initial Run (10 min)	11.14
Air-to-Fuel-Ratio Measurement and Control	11.9
External Oil Cooling System	9.36
Dipstick Hole O-ring	11.2
Keywords	15
Sequence IIIF Test Reporting	Annex A5
Quality Index	10.8.10
Engine Front Cover	9.21
Measurement Resolution	10.8.8
Mounting the Engine on the Test Stand	9.45
Exhaust and Exhaust Back Pressure Systems	6.15
Oil Pan	9.24
Camshaft Installation	9.13
Piston Ring Fitting	9.10.1
Pre-Test Cleaning Materials	7.5
End-of Test Used Oil Sample Testing	12.6
NOx Determinations	11.12
Test Oil Sample Requirements	8
Crankshaft Installation	9.14.1
Evaluation of Reference Oil Test Results	10.5
Reagents and Materials	7
Annexes
Sequence IIIF Fluid Conditioning Module	6.6
Photographs of Test Parts	12.11
Piston Installation	9.18.1
Determination of Operational Validity	12.14
Post-Test Camshaft and Lifter Wear Measurements	12.5
Condenser Cleaning	9.1
Camshaft Bearing Installation	9.12
Temperature Measurement	6.13
Piston Deposit Rating	12.4
Lifting of Assembled Engines	9.44
Adjustment of Valve Spring Loads	9.26
Fastener Torque Specifications and Torquing Procedures	9.7.4
Test Engine	6.4
Preparation of Apparatus	9
Hydraulic Valve Lifters	9.28
Terminology	3
Sealing and Anti-seize Compounds	7.6
Reference Oil Test Frequency	10.3
Sequence IIIFVIS Test Procedure	Appendix X2
Induction Air Supply Humidity, Temperature, and Pressure	6.12
Referenced Documents	2
Testing Oil Samples for Wear Metals	12.8
Valve Train Loading	9.30
Appendixes
Non-Scheduled Shutdowns	11.6
Pressure Measurement and Sensor Location	6.17
Measurement Accuracy	10.8.2
Engine Oil-Cooling System	6.10
Pre-Test Camshaft and Lifter Measurements	9.11
Safety Precautions	Annex A12
Crankshaft End Play	9.17
Data Recording	11.13
Oil Sampling	11.7
Summary of Test Method	4
Rocker Covers	9.32
Start-up	11.4
Camshaft Sprocket and Timing Chain	9.16
Accessory Drive Units	9.40
Coolant Mixing Tank	6.8
Deviations from Test Operational Limits	13.3
Coolant Outlet Adapter	9.35
Sequence IIIF Engine Oil Level Worksheet	Annex A9
Sample Rate	10.8.1
Speed	10.8.6
Sequence IIIF Test Air-to-Fuel Ratio Control Flow Chart	Annex A6
Oil Sample Valve	9.37
Status of Non-Reference Oil Tests Relative to Reference Oil Test	10.6
Oil Leveling	11.8
Laboratory	6.1
Test Termination	11.16
Sequence IIIF Determination Volume of Engine Oil in Pan	Annex A3
Engine Block Preparation	9.9
Engine Cooling System	6.6.1
Specified Equipment	6.3
Sequence IIIFHD Test Procedure	Appendix X1
External Cooling System Cleaning	9.46
Piston Pin Installation	9.18
Engine Block Cleaning	9.5
Engine Build-up Procedure	9.7
Severity Adjustments	12.13
Sequence IIIF Test Parts Replacement Guidelines	Annex A2
System Time Response	10.8.9
Cylinder Head Assembly	9.25
Oil Dipstick Hole	9.23
Drawings	6.2
Laboratory and Engine Test Stand Calibration	10.1
Engine and Condenser Coolant	7.2
Pushrods	9.29
Determination of Test Results	12
Oil Consumption Computation	12.10
Main Bearing Cap Installation	9.14.2
Engine Build Worksheets	Annex A10
Data Acquisition and Control	10.8
Precision of Reported Units	13.2
The Role of the ASTM Test Monitoring Center (TMC) and the Calibration Program	Annex A1
Engine Parts	6.4.1
Flow	10.8.5
Retention of Representative Test Parts	12.12
Intake Manifold	9.31
Precision and Bias	14
Report Forms	13.1
Viscosity Test	12.7
Test Oil Charging	9.49
Sequence IIIF Test Fuel Analysis	Annex A4
Hardware Information	9.7.3