Astm D 4859 – 97 (Reapproved 2003) pdf free download

Standard Specification for
Lubricants for Two-Stroke-Cycle Spark-Ignition Gasoline

This standard is issued under the fixed designation D 4859; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of the last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) 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

1.1 This specification covers lubricants intended for use in
two-stroke-cycle spark-ignition gasoline engines, typically
other than outboard motors, which are particularly prone to ring
sticking, but which are also liable to suffer damage arising
from deposit-induced preignition, piston scuff, spark plug
fouling and piston varnish.

1.2 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information

2. Referenced Documents

2.1 ASTM Standards:
D 445 Test Method for Kinematic Viscosity of Transparent
and Opaque Liquids (and the Calculation of Dynamic
D 664 Test Method for Acid Number of Petroleum Products
by Potentiometric Titration2
D 874 Test Method for Sulfated Ash from Lubricating Oils
and Additives2
D 2270 Practice for Calculating Viscosity Index from Kinematic Viscosity at 40° and 100°C2
D 2896 Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration2
D 4857 Test Method for Determination of the Ability of
Lubricants to Minimize Ring Sticking and Piston Deposits
in Two-Stroke-Cycle Gasoline Engines Other Than Outboards3
D 4858 Test Method for Determination of the Tendency of
Lubricants to Promote Preignition in Two-Stroke-Cycle
Gasoline Engines3
D 4863 Test Method for Determination of Lubricity of
Two-Stroke-Cycle Gasoline Engine Lubricants3

2.2 Coordinating European Council (CEC) Standard:

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