ASTM D4863-13 PDF

Scope: 5.1 The oil in a two-stroke-cycle gasoline engine is either mixed with the fuel prior to use or is metered into the fuel supply at, or at some point prior to, its passage into the engine crankcase. The possibility of the amount of oil actually present in the engine being less than optimum always exists. Also, with some oil metering systems short periods of operation with less oil than desirable can occur when the power is increased suddenly. It has also been found that the incidence of piston scuff early in the life of the engine might be related to the lubricity of the oil used as defined by test procedures of this type.

1.1 This test method² evaluates the ability of lubricants to minimize piston and bore scuffing in two-stroke-cycle spark-ignition gasoline engines.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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.

ASTM D4863-13 Referenced Document

ASTM B152/B152M Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar
ASTM D2270 Standard Practice for Calculating Viscosity Index From Kinematic Viscosity at 40 and 100176C
ASTM D2700 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
ASTM D2885 Standard Test Method for Research and Motor Method Octane Ratings Using On-Line Analyzers
ASTM D2896 Standard Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration
ASTM D439 Standard Specification for Automotive Gasoline
ASTM D445 Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)
ASTM D4857 Standard Test Method for Determination of the Ability of Lubricants to Minimize Ring Sticking and Piston Deposits in Two-Stroke-Cycle Gasoline Engines Other Than Outboards
ASTM D4858 Standard Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines
ASTM D6593 Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature
ASTM D664 Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
ASTM D874 Standard Test Method for Sulfated Ash from Lubricating Oils and Additives
ASTM E178 Standard Practice for Dealing With Outlying Observations

2013 ASTM D4863-13 Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants
2010 ASTM D4863-10 Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants
2008 ASTM D4863-08 Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants
2002 ASTM D4863-02 Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants
2000 ASTM D4863-00 Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants