ASTM_D_7320_-_18e1.pdf

Designation:D7320181Standard Test Method forEvaluation of Automotive Engine Oils in the Sequence IIIG,Spark-Ignition Engine1This standard is issued under the fixed designation D7320;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially updated TMC governance information in June 2022.INTRODUCTIONPortions of this test method are written for use by laboratories that make use of ASTM TestMonitoring Center(TMC)2services(see Annex A1 Annex A4).The TMC provides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those produced by laboratories previouslycalibrated by the TMC.In general,the Test Purchaser decides if a calibrated test stand is to be used.Organizations such astheAmerican Chemistry Council require that a laboratory utilize the TMC services as part of their testregistration process.In addition,the American Petroleum Institute and the Gear Lubricant ReviewCommittee of the Lubricant Review Institute(SAE International)require that a laboratory use theTMC services in seeking qualification of oils against their specifications.The advantage of using the TMC services to calibrate test stands is that the test laboratory(andhence the Test Purchaser)has an assurance that the test stand was operating at the proper level of testseverity.It should also be borne in mind that results obtained in a non-calibrated test stand may notbe the same as those obtained in a test stand participating in the ASTM TMC services process.Laboratories that choose not to use the TMC services may simply disregard these portions.1.Scope*1.1 This test method covers an engine test procedure forevaluating automotive engine oils for certain high-temperatureperformance characteristics,including oil thickening,varnishdeposition,oil consumption,as well as engine wear.Such oilsinclude both single viscosity grade and multiviscosity gradeoils that are used in both spark-ignition,gasoline-fueledengines,as well as in diesel engines.1.1.1 Additionally,with nonmandatory supplementalrequirements,a IIIGA Test(Mini Rotary Viscometer and ColdCranking Simulator measurements),a IIIGVS Test(EOTviscosity increase measurement),or a IIIGB Test(phosphorousretention measurement)can be conducted.These supplementaltest procedures are contained in Appendix X1,Appendix X2,and Appendix X3,respectively.NOTE1Companion test methods used to evaluate engine oil perfor-mance for specification requirements are discussed in SAE J304.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.2.1 ExceptionWhere there is no direct SI equivalentsuch as screw threads,national pipe threads/diameters,andtubing size.1.3 This test method is arranged as follows:SectionIntroductionScope1Referenced Documents2Terminology3Summary of Test Methods4Significance and Use5Apparatus6Laboratory6.1Drawings6.2Specified Equipment6.3Test Engine6.4Engine Parts6.4.1Engine Speed and Load Control6.5Fluid Conditioning Module6.61This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0.01 on Passenger Car Engine Oils.Current edition approved April 1,2018.Published April 2018.Originallyapproved in 2006.Last previous edition approved in 2017 as D7320 17a.DOI:10.1520/D7320-18E01.2Until the next revision of this test method,the ASTM Test Monitoring Centerwill update changes in the test method by means of information letters.Informationletters may be obtained from the ASTM Test Monitoring Center,203 ArmstrongDrive,Freeport,PA 16229.Attention:Director.This edition incorporates revisionsin all information letters through No.17-3.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1SectionEngine Cooling System6.6.1Flushing Tank6.7Coolant Mixing Tank6.8Condenser Cooling Systems6.9Engine Oil-Cooling System6.10Fuel System6.11Induction Air Supply Humidity,Temperature,and Pressure6.12Temperature Measurement6.13Thermocouple Location6.13.1Air-to-Fuel Ratio Determination6.14Injector Flow Testing6.14.1Exhaust and Exhaust Back Pressure Systems6.15Blowby Flow Rate Measurement6.16Pressure Measurement and Pressure Sensor Location6.17Reagents and Materials7Test Fuel7.1Engine and Condenser Co