ASTM_D_6922_-_13.pdf

Designation:D692213Standard Test Method forDetermination of Homogeneity and Miscibility in AutomotiveEngine Oils1This standard is issued under the fixed designation D6922;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.1.Scope*1.1 This test method covers the determination if an automo-tive engine oil is homogeneous and will remain so,and if it ismiscible with certain standard reference oils after being sub-mitted to a prescribed cycle of temperature changes.This testmethod is very similar to the homogeneity and miscibility testdescribed in FEDSTD791/3470.1.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.3 WARNINGMercury has been designated by manyregulatory agencies as a hazardous material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.1.4 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:2D97 Test Method for Pour Point of Petroleum ProductsD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD5844 Test Method for Evaluation of Automotive EngineOils for Inhibition of Rusting(Sequence IID)(Withdrawn2003)3D6557 Test Method for Evaluation of Rust Preventive Char-acteristics of Automotive Engine OilsE1 Specification for ASTM Liquid-in-Glass ThermometersE344 Terminology Relating to Thermometry and Hydrom-etry2.2 Federal Test Method Standard:4FEDSTD791/3470.1 Homogeneity and Miscibility of Oils3.Terminology3.1 Definitions:3.1.1 calibrate,vto determine the indication or output of ameasuring device with the respect of that of a standard.E3443.1.2 homogeneity,nthe ability of a test oil itself to remainthe same in appearance throughout(uniform)after submissionto a series of temperature changes.3.1.3 miscibility,nthe ability of a reference oil and test oilto form a uniform mixture after blending and not separate intotwo phases after submission to a series of temperature changes.3.1.4 reference oil,nan oil of known performancecharacteristics,used as a basis for comparison.3.1.4.1 DiscussionReference oils are used to calibratetesting facilities,to compare the performance of other oils,orto evaluate other materials(such as seals)that interact withoils.D58443.1.5 specimen,na piece or portion of test oil used tomake a test.3.1.6 test oil,nany oil subjected to evaluation in anestablished procedure.D65574.Summary of Test Method4.1 Visual color determinations and observations are madeon an undiluted test oil specimen,along with six blends of thesame test oil that have been combined with specific reference1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.B0 on Automotive Lubricants.Current edition approved May 1,2013.Published May 2013.Originallyapproved in 2003.Last previous edition approved in 2011 as D6922 11.DOI:10.1520/D6922-13.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.*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 oils.The pour point is then determined for the undiluted test oilspecimen and the six blends.The undiluted test oil specimenand six blends are then allowed to warm to room temperature.Color determinations and observations are again made on theundiluted test oil specimen and six blends.The undiluted testoil specimen and six blends are heated to 232 C,then allowedto cool to room temperature,and then stored at their pour pointtemperatures for 18 h to 24 h.The undiluted test oil specimenand six blends are then allowed to thaw and a series