ASTM D4863-02

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

STANDARD published on 10.11.2002

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The information about the standard:

Designation standards: ASTM D4863-02
Note: WITHDRAWN
Publication date standards: 10.11.2002
SKU: NS-28933
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM D4863-02 :

Keywords:

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

Additional information

Significance and Use

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 may be related to the lubricity of the oil used as defined by test procedures of this type.

1. Scope

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

1.2 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.

1.3 The values stated in SI units are the standard. The values in parentheses are provided for information only.

2. Referenced Documents

D439-89	Specification for Automotive Gasoline (Withdrawn 1990)
D4858-13	Standard Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines (Withdrawn 2022)
E178-21	Standard Practice for Dealing With Outlying Observations
D6593-18e1	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, Light-Duty Conditions (Includes all amendments and changes 6/22/2022).
D4857-12	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 (Withdrawn 2021)
D2896-26	Standard Test Method for Base Number of Petroleum Products by Potentiometric Perchloric Acid Titration
D2885-21(2025)e1	Standard Test Method for Determination of Octane Number of Spark-Ignition Engine Fuels by On-Line Direct Comparison Technique (Includes all amendments and changes 3/27/2026).
D2700-26b	Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel (Includes all amendments and changes 7/13/2026).
D2270-24	Standard Practice for Calculating Viscosity Index from Kinematic Viscosity at 40 ?C and 100 ?C
D874-23	Standard Test Method for Sulfated Ash from Lubricating Oils and Additives
D445-26	Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D664-24	Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
B152/B152M-24	Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar

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