MIL-PRF-21260

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NOT-MEASUREMENT

SENSITIVE

MIL-PRF-21260E

31 July 1998

SUPERSEDING

MIL-L-21260D

29 April 1988

PERFORMANCE SPECIFICATION

LUBRICATING OIL, INTERNAL COMBUSTION ENGINE,

PRESERVATIVE BREAK-IN

This specification is approved for use by all Departments and Agencies of

the Department of Defense.

1. SCOPE

1.1 Scope. This performance specification covers engine oils suitable for preservation,

break-in, and lubrication of reciprocating internal combustion engines of both spark-ignition and

compression-ignition types, and of power transmission fluid applications in equipment used in

combat/tactical service (see 6.1, 6.7 and 6.9).

1.2 Classification. The lubricating oils are of the following SAE viscosity grades (see

6.2 and 6.3):

Viscosity Grade Military Symbol NATO Code

SAE 10W PE-10 C-640

SAE 30 PE-30 C-642

SAE 40 PE-40 ----

SAE 15W-40 PE-15/40 ----

Beneficial comments (recommendations, additions, deletions) and any pertinent data which

may be of use in improving this document should be addressed to: U.S. Army Tank-automotive

and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000, by using

the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of

this document, or by letter.

AMSC N/A FSC 9150

DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.

MIL-PRF-21260E

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3 and 4 of this

specification. This section does not include documents cited in other sections of this

specification or recommended for additional information or as examples. While every effort has

been made to ensure the completeness of this list, document users are cautioned that they must

meet all specified requirement documents cited in sections 3 and 4 of this specification, whether

or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards,

and handbooks form a part of this document to the extent specified herein. Unless otherwise

specified, the issues of these documents are those listed in the issue of the Department of

Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the

solicitation (see 6.2).

SPECIFICATIONS

DEPARTMENT OF DEFENSE

MIL-PRF-2104 -Lubricating Oil, Internal Combustion Engine,

Combat/Tactical Service.

MIL-PRF-46167 -Lubricating Oil, Internal Combustion Engine, Arctic.

STANDARDS

FEDERAL

FED-STD-791 -Lubricants, Liquid Fuels and Related Products;

Methods of Testing, or Equivalent (See 4.3.1).

(Unless otherwise indicated, copies of the above specifications, standards, and handbooks

are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building

4D, Philadelphia, PA 19111-5094.)

2.2.2 Other Government documents, drawings, and publications. The following other

Government documents, drawings, and publications form a part of this document to the extent

specified herein. Unless otherwise specified, the issues are those cited in the solicitation.

MIL-PRF-21260E

U.S. DEPARTEMENT OF LABOR (DOL)

OSHA 29 CFR 1910.1200 -Hazard Communication; Interpretation Regarding

Lubricating Oils.

(Copies of the Code of Federal Regulations (CFR) are available from the Superintendent

of Documents, U.S. Government Printing Office, Washington DC 20402.)

2.3 Non-Government publications. The following documents form a part of this

document to the extent specified herein. Unless otherwise specified, the issues of the documents

which are DoD Adopted are those listed in the issue of the DoDISS cited in the solicitation.

Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the

documents cited in the solicitation (see 6.2).

AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)

D92 -Standard Test Method for Flash and Fire Points by

Cleveland Open Cup.

D94 -Standard Test Method for Saponification Number of

Petroleum Products (DoD Adopted).

D97 -Standard Test Method for Pour Point of Petroleum Oils

(DoD Adopted).

D129 -Standard Test Method for Sulfur in Petroleum Products

(General Bomb Method) (DoD Adopted).

D130 -Standard Test Method for Detection of Copper Corrosion

from Petroleum Products, by the Copper Strip Tarnish

Test (DoD Adopted).

D287 -Standard Test Method for API Gravity of Crude

Petroleum and Petroleum Products (Hydrometer Method)

(DoD Adopted).

D445 -Standard Test Method for Kinematic Viscosity of

Transparent and Opaque Liquids (and the Calculation of

Dynamic Viscosity) (DoD Adopted).

D524 -Standard Test Method for Ramsbottom Carbon Residue

of Petroleum Products (DoD Adopted).

D664 -Standard Test Method for Neutralization Number by

Potentiometric Titration (DoD Adopted).

D808 -Standard Test Method for Chlorine in New and Used

Petroleum Products (Bomb Method) (DoD Adopted).

D874 -Standard Test Method for Sulfated Ash from Lubricating

Oils and Additives (DoD Adopted).

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摘要：

MIL-PRF-21260 是美国军方制定的防腐与润滑用油标准规范，主要涵盖用于内燃机、涡轮发动机及其他军事装备的防锈润滑油性能要求。该规范取代了老旧的 MIL-L-21260 标准，其核心特征在于油品需具备优异的防腐蚀能力、良好的低温流动性以及稳定的高温抗氧化性能。MIL-PRF-21260 油品通常分为两种类型：类型 I 为普通防腐润滑油，适用于日常存储与运行；类型 II 则具有更强的防锈特性，专门用于长期封存或恶劣环境下的设备保护。该标准广泛应用于军用车辆、航空发动机、舰船以及地面工程机械

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MIL-PRF-21260

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