Standard Test Method for Insolubles In Used Lubricating Oils

SCOPE
1.1 This test method covers the determination of pentane and toluene insolubles in used lubricating oils.
1.2 Procedure A covers the determination of insolubles without the use of coagulant in the pentane. It provides an indication of the materials that can readily be separated from the oil-solvent mixtures by centrifuging.
1.3 Procedure B covers the determination of insolubles in oils containing detergents and employs a coagulant for both the pentane and toluene insolubles. In addition to the materials separated by using Procedure A, this coagulation procedure separates some finely divided materials that may be suspended in the oil. Note 1
Results obtained by Procedures A and B should not be compared since they usually give different values. The same procedure should be employed when comparing values obtained periodically on an oil in use or when comparing results determined by two or more laboratories.
1.4 The values stated in acceptable SI units are to be regarded as the standard.
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. For specific precautionary statements, see , , , , and .

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Publication Date
31-Jan-2005
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ASTM D893-05 - Standard Test Method for Insolubles In Used Lubricating Oils
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
An American National Standard
Designation:D893–05
Standard Test Method for
1
Insolubles in Used Lubricating Oils
This standard is issued under the fixed designation D 893; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (ϵ) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* D 4057 Practice for Manual Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the determination of pentane
D 4177 Practice for Automatic Sampling of Petroleum and
and toluene insolubles in used lubricating oils.
Petroleum Products
1.2 Procedure A covers the determination of insolubles
without the use of coagulant in the pentane. It provides an
3. Terminology
indication of the materials that can readily be separated from
3.1 Definitions:
the oil-solvent mixtures by centrifuging.
3.1.1 coagulate, v—to cause to become viscous or thick-
1.3 Procedure B covers the determination of insolubles in
ened into a coherent mass.
oilscontainingdetergentsandemploysacoagulantforboththe
3.1.2 coagulated pentane insolubles, n—in used oil analy-
pentane and toluene insolubles. In addition to the materials
sis, separated matter that results when a coagulant is added to
separated by using Procedure A, this coagulation procedure
a solution of used oil in pentane.
separates some finely divided materials that may be suspended
3.1.2.1 Discussion—The addition of a coagulant will aid in
in the oil.
separating finely divided materials that may have been held in
NOTE 1—Results obtained by Procedures A and B should not be
suspension because of the dispersant characteristics of the oil.
compared since they usually give different values. The same procedure
3.1.3 coagulated toluene insolubles, n—in used oil analysis,
should be employed when comparing values obtained periodically on an
coagulated and separated matter not soluble in pentane or
oil in use or when comparing results determined by two or more
toluene.
laboratories.
3.1.4 pentane insolubles, n—in used oil analysis, separated
1.4 The values stated in acceptable SI units are to be
matter resulting when a used oil is mixed with pentane.
regarded as the standard.
3.1.4.1 Discussion—In this test method, the separation is
1.5 This standard does not purport to address all of the
effected by centrifugation.
safety concerns, if any, associated with its use. It is the
3.1.5 toluene insolubles, n—in used oil analysis, the portion
responsibility of the user of this standard to establish appro-
of pentane insolubles not soluble in toluene.
priate safety and health practices and determine the applica-
3.1.6 used oil, n—any oil that has been in a piece of
bility of regulatory limitations prior to use. For specific
equipment (for example, an engine, gearbox, transformer, or
precautionary statements, see 7.7, 7.8, 7.9, 9.1, and 9.7.
turbine), whether operated or not.
3.1.6.1 Discussion—In this test method, the oil can be any
2. Referenced Documents
oil that has been used for lubrication.
2
2.1 ASTM Standards:
3.2 Definitions of Terms Specific to This Standard:
D 1193 Specification for Reagent Water
3.2.1 insoluble resins, n—in used oil analysis, separated
matter soluble in toluene but not pentane.
3.2.1.1 Discussion—Insoluble resins can be calculated for
1
This test method is under the jurisdiction of ASTM Committee D02 on
either Procedue A or B by subtracting the toluene insolubles
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
from the pentane insolubles.
D02.06 on Analysis of Lubricants.
Current edition approved Feb. 1, 2005. Published February 2005. Originally
ϵ1
4. Summary of Test Method
approved in 1967. Last previous edition approved in 2002 as D 893 – 97 (2002) .
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1 Procedure A—Arepresentative sample of used lubricat-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ing oil is mixed with pentane and centrifuged. The oil solution
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
is decanted and the precipitate washed twice with pentane,
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Please contact ASTM International (www.astm.org) for the latest information.
D893–05
dried, and weighed to
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