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    ASTM D4863 - 13

    Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants

    Active Standard ASTM D4863 | Developed by Subcommittee: D02.B0

    Book of Standards Volume: 05.05

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    Significance and Use

    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. Scope

    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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    B152/B152M Specification for Copper Sheet, Strip, Plate, and Rolled Bar

    D439 Specification for Automotive Gasoline

    D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

    D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration

    D874 Test Method for Sulfated Ash from Lubricating Oils and Additives

    D2270 Practice for Calculating Viscosity Index from Kinematic Viscosity at 40C and 100C

    D2700 Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

    D2885 Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique

    D2896 Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration

    D4857 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

    D4858 Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines

    D6593 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, Light-Duty Conditions

    E178 Practice for Dealing With Outlying Observations

    ICS Code

    ICS Number Code 75.100 (Lubricants, industrial oils and related products)

    UNSPSC Code

    UNSPSC Code 15121500(Lubricating preparations)

    Referencing This Standard
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    DOI: 10.1520/D4863-13

    Citation Format

    ASTM D4863-13, Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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