ASTM_D_6794_-_14.pdf

Designation:D679414Standard Test Method forMeasuring the Effect on Filterability of Engine Oils AfterTreatment with Various Amounts of Water and a Long(6 h)Heating Time1This standard is issued under the fixed designation D6794;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.INTRODUCTIONAny properly equipped laboratory,without outside assistance,can use the procedure described inthis test method.However,the ASTM Test Monitoring Center(TMC)2provides reference oils and anassessment of the test results obtained on those oils by the laboratory(see AnnexA1).By these means,the laboratory will know whether their use of the test method gives results statistically similar to thoseobtained by other laboratories.Furthermore,various agencies require that a laboratory utilize the TMCservices in seeking qualification of oils against specifications.For example,the U.S.Army imposessuch a requirement in connection with several Army engine lubricating oil specifications.Accordingly,this test method is written for use by laboratories that utilize the TMC services.Laboratories that choose not to use those services may simply ignore those portions of the test methodthat refer to the TMC.This test method may be modified by means of information letters issued by the TMC.In addition,the TMC may issue supplementary memoranda related to the test method(see Annex A1).For other information,refer to the research report of this test method.31.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 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,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:4D1193 Specification for Reagent WaterD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4485 Specification for Performance of Active API ServiceCategory Engine OilsD5844 Test Method for Evaluation of Automotive EngineOils for Inhibition of Rusting(Sequence IID)(Withdrawn2003)5D5862 Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine(Withdrawn 2009)53.Terminology3.1 Definitions:1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.B0 on Automotive Lubricants.Current edition approved May 1,2014.Published May 2014.Originallyapproved in 2002.Last previous edition approved in 2013 as D6794 13.DOI:10.1520/D6794-14.2ASTM Test Monitoring Center,6555 Penn Ave.,Pittsburgh,PA 152006-4489.This test method is supplemented by Information Letters and Memoranda issued bythe ASTM Test Monitoring Center.This edition includes all information lettersthrough No.131.Users of this test method can contact the ASTM Test MonitoringCenter to obtain the most recent of these.3Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D02-1492.4For referenced ASTM standards,visit the ASTM website,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.5The last approved version of this historical standard is referenced onwww.astm.org.*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 States1 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 test,using a coded oil,conductedas specified in the test method.3.1.2.1 DiscussionThe test result is used to determine thesuitability of the testing facility/laboratory to conduct suchtests on non-reference oils.3.1.3 candidate oil,nan oil that is intended to have theperformance characteristics necessary to satisfy a specificationand is tested against that specification.D58443.1.4 engine oil,na liquid that reduces friction or wear,orboth,between the moving parts within an engine;removesheat,particularly from the underside of pistons;and serves asa combustion gas sealant for the piston rings.3.1.4.1 DiscussionIt may contain additives to enhancecertain pro