1、Designation:D679519a1Standard Test Method forMeasuring the Effect on Filterability of Engine Oils AfterTreatment with Water and Dry Ice and a Short(30 min)Heating Time1This standard is issued under the fixed designation D6795;the number immediately following the designation indicates the year oforig
2、inal 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.INTRODUCTIONPort
3、ions of this test method are written for use by laboratories that make use of ASTM TestMonitoring Center(TMC)2services(see Annex A1).The TMC provides reference oils,and engineering and statistical services to laboratories that desireto produce test results that are statistically similar to those pro
4、duced 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 America
5、n 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 te
6、st 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 ser
7、vices process.Laboratories that choose not to use the TMC services may simply disregard these portions.1.Scope*1.1 This test method covers the determination of the ten-dency of an oil to form a precipitate that can plug an oil filter.It simulates a problem that may be encountered in a new enginerun
8、for a short period of time,followed by a long period ofstorage with some water in the oil.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 This standard does not purport to address all of thesafety concerns,if any,associat
9、ed with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognize
10、d principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:3D1193 Specification for Reage
11、nt WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4485 Specification for Performance of Active API ServiceCategory Engine Oils1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibilit
12、y ofSubcommittee D02.B0 on Automotive Lubricants.Current edition approved July 1,2019.Published July 2019.Originally approvedin 2002.Last previous edition approved in 2019 as D6795 19.DOI:10.1520/D6795-19AE01.2ASTM Test Monitoring Center,203Armstrong Drive,Freeport,PA16229.Thistest method is supplem
13、ented by Information Letters and Memoranda issued by theASTM Test Monitoring Center.This edition includes all information letters throughNo.18-1.Users of this test method can contact the ASTM Test Monitoring Centerto obtain the most recent of these.3For referenced ASTM standards,visit the ASTM websi
14、te,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,P
15、O 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 t
16、he World Trade Organization Technical Barriers to Trade(TBT)Committee.1D5844 Test Method for Evaluation of Automotive EngineOils for Inhibition of Rusting(Sequence IID)(Withdrawn2003)4D5862 Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine(Withdrawn 2009)43.Terminology3.1 Definitions:3.1.1 calibrate,vto determine the indication or output of adevice(e.g.,thermometer,manometer,engine)with respect tothat of a standard.3.1.2 calibration test,na tes