ASTM-D7320 2015

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D7320-15a Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIG, Spark-Ignition Engine

Published By	Publication Date	Number of Pages
ASTM	2015	53

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Description

ASTM D7320-15a

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

ASTM D7320

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.

1.1.1 Additionally, with nonmandatory supplemental requirements, a IIIGA Test (Mini Rotary Viscometer and Cold Cranking Simulator measurements), a IIIGVS Test (EOT viscosity increase measurement), or a IIIGB Test (phosphorous retention measurement) can be conducted. These supplemental test procedures are contained in Appendixes Appendix X1, Appendix X2, and Appendix X3, respectively.

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 Exception—Where there is no direct SI equivalent such as 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. Specific warning statements are provided in 6.14.1.1 and 7.1.

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 IIIG test; spark-ignition automotive engine; varnish; varnish deposition;

ICS Code

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

DOI: 10.1520/D7320-15A

Additional information

Torques for Miscellaneous Bolts, Studs, and Nuts	9.7.4.3
Main Bearings	9.14
Intake Manifold Cleaning	9.2
Blowby Flow Rate Measurements	12.8
Air-to-Fuel Ratio Determination	6.14
Status of Test Stands Used for Non-Standard Tests	10.6
Blowby Flow Rate Determination	Annex A13
Thermocouple Location	6.13.1
Engine Coolant Jacket Cleaning (Flushing)	9.47
Significance and Use	5
Sequence IIIG Blueprint Listing	Annex A15
Engine Disassembly	12.2
Blowby Flow Rate Measurement	11.11
Throttle Body	9.39
Introduction
Exhaust Manifolds, Water-Cooled	9.41
Coolant Additive	7.3
Cleaning of Engine Parts (other than the block and heads)	9.3
Water Inlet Adapter	9.33
Piston Fitting and Numbering	9.10
Camshaft Installation	9.13
Engine Operating Procedure	11
General Information	9.7.1
Testing of Reference Oils	10.2
Initial run (10 min)	11.14
Fluid Conditioning Module	6.6
Coolant Preparation	7.4
Crankshaft Sprocket	9.15
Engine Flywheel	9.42
Special Parts	9.7.2
Load	10.7.7
Cylinder Head Cleaning	9.6
Apparatus	6
Parts Replacement	9.8
Scheduled Shutdown	11.5
Flushing Tank	6.7
Injector Flow Testing	6.14.1
Condenser Cooling Systems	6.9
Coolant Charging	9.48
Fuel System	6.11
Sequence IIIG Test Parts Replacement Guidelines	Annex A5
Air-to-Fuel Ratio Verification	11.10
Cylinder Head Bolts	9.7.4.2
Sequence IIIG Test Set Points and Control States	Annex A10
Report	13
Test Fuel	7.1
Calibration	10
ASTM Test Monitoring Center: Related Information	Annex A4
Pressure Checking of Engine Coolant System	9.43
Camshaft Sprocket, and Timing Chain	9.16
Sequence IIIG Engine Oil Level Worksheet	Annex A12
Guidelines For Hardware Subject To First In – First Out Criteria	Annex A19
Engine Start-up and Shutdown Procedures	11.3
Harmonic Balancer	9.19
Scope	1
Cylinder Head Installation	9.27
Temperature	10.7.3
Engine Speed and Load Control	6.5
Main Bearing Cap Bolts	9.7.4.1
Connecting Rod Bearings	9.20
Engine Oil Pump Priming	9.50
Ignition System	9.38
Condenser	9.34
Pressure	10.7.4
Preparation of Parts for Rating of Sticking, Deposits, and Plugging	12.3
Dipstick Hole O-ring	11.2
Mounting the Engine on the Test Stand	9.45
Keywords	15
Quality Index	10.7.10
Engine Front Cover	9.21
Measurement Resolution	10.7.8
Sequence IIIGA Test Procedure	Appendix X1
External Oil Cooling System	9.36
Safety Hazards	Annex A14
Exhaust and Exhaust Back Pressure Systems	6.15
Oil Pan	9.24
Reagents and Materials	7
Piston Ring Fitting	9.10.1
Pre-Test Cleaning Materials	7.5
NOx Determinations	11.12
Test Oil Sample Requirements	8
Crankshaft Installation	9.14.1
Coolant Inlet Adapter	9.22
Evaluation of Reference Oil Test Results	10.4
Air-to-Fuel-Ratio Measurement and Control	11.9
Engine Oil Cooling System Schematic	Annex A18
Dipstick and Hole Plug	11.1
Induction Air Supply Humidity, Temperature, and Pressure	6.12
Sequence IIIG Test Report Forms and Data Dictionary	Annex A8
Post-Test Camshaft and Lifter Wear Measurements	12.5
Pressure Measurement and Pressure Sensor Location	6.17
Condenser Cleaning	9.1
Summary of Test Methods	4
Camshaft Bearing Installation	9.12
Temperature Measurement	6.13
Speed	10.7.6
Fastener Torque Specifications and Torquing Procedures	9.7.4
Lifting of Assembled Engines	9.44
Testing Oil Samples for Wear Metals	12.7
Piston Installation	9.18.1
Test Engine	6.4
Preparation of Apparatus	9
Hydraulic Valve Lifters	9.28
Engine Oil Quality Testing (100 h)	11.15
Terminology	3
Sealing and Anti-seize Compounds	7.6
Referenced Documents	2
Cylinder Head Assembly	9.25
Coolant Outlet Adapter	9.35
Valve Train Loading	9.30
Crankshaft End Play	9.17
ASTM Test Monitoring Center: Organization	Annex A1
Non-Scheduled Shutdowns	11.6
Measurement Accuracy	10.7.2
Sequence IIIG Quality Index Upper and Lower Values	Annex A11
ASTM Test Monitoring Center: Maintenance Activities	Annex A3
Engine Oil-Cooling System	6.10
ASTM Test Monitoring Center: Calibration Procedures	Annex A2
Sequence IIIGVIS Test Procedure	Appendix X2
Pre-Test Camshaft and Lifter Measurements	9.11
	Section
Data Recording	11.13
Oil Sampling	11.7
Rocker Covers	9.32
Start-up	11.4
Accessory Drive Units	9.40
Coolant Mixing Tank	6.8
Photographs of Test Parts	12.10
Reference Oil Test Frequency	10.3
Adjustment of Valve Spring Loads	9.26
Piston Deposit Rating	12.4
System Time Response	10.7.9
Oil Sample Valve	9.37
Status of Non-Reference Oil Tests Relative to Reference Oil Test	10.5
Oil Leveling	11.8
Laboratory	6.1
Test Termination	11.16
Fluid Condition Module Components	Annex A16
Sequence IIIG Determination Volume of Engine Oil in Pan	Annex A6
Engine Cooling System	6.6.1
Specified Equipment	6.3
Engine Block Preparation	9.9
External Cooling System Cleaning	9.46
Piston Pin Installation	9.18
Engine Block Cleaning	9.5
Engine Build-up Procedure	9.7
Severity Adjustments	12.12
Sequence IIIGB Test Procedure	Appendix X3
Connecting Rod Cleaning	9.4
Determination of Operational Validity	12.13
Oil Dipstick Hole	9.23
Drawings	6.2
Laboratory and Engine Test Stand Calibration	10.1
Precision of Reported Units	13.4
Engine and Condenser Coolant	7.2
Hardware Information	9.7.3
Pushrods	9.29
Determination of Test Results	12
Oil Consumption Computation	12.9
Main Bearing Cap Installation	9.14.2
Engine Build Worksheets	Annex A17
Flow	10.7.5
Data Acquisition and Control	10.7
Sample Rate	10.7.1
Engine Parts	6.4.1
Retention of Representative Test Parts	12.11
Intake Manifold	9.31
Precision and Bias	14
Report Forms	13.1
Viscosity Test	12.6
Test Oil Charging	9.49
Sequence IIIG Test Fuel Analysis	Annex A7
Sequence IIIG Test Air-to-Fuel Ratio Control Flow Chart	Annex A9