ASTM D6618-00 - 10.12.2000
 
1. Scope

1.1 This test method covers a four-stroke cycle diesel engine test procedure for evaluating engine oils for certain high-temperature performance characteristics, particularly ring sticking, ring and cylinder wear, and accumulation of piston deposits. Such oils include both single viscosity SAE grade and multiviscosity SAE grade oils used in diesel engines. It is commonly known as the 1M-PC test (PC for Pre-Chamber) and is used in several API oil categories, notably the CF and CF-2 and the military category described in MIL-PRF-2104 (see Note 1).

Note 1—Companion test methods used to evaluate other engine oil performance characteristics for API oil categories CF and CF-2 are discussed in SAE J304. The companion tests used by the military can be found in MIL-PRF-2104.

1.2 The values stated in either SI units or other units are to be regarded separately as the standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other, without combining values in any way.

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.

1.4 This test method is arranged as follows:

TABLE OF CONTENTS
Scope1
Reference Documents2
Terminology3
Summary of Test Method4
Significance and Use5
Apparatus6
Test Engine6.1
Engine Accessories6.2-6.14
Engine Oil System6.15
Cooling System6.16
Fuel System6.17
Intake Air System6.18
Exhaust System6.19
Blowby Meter6.20
Thermocouples6.21
Parts6.22
Instrumentation6.23
Crankcase Paint6.24
Reagents and Materials7
Fuel7.1
Test Oil7.2
Engine Coolant7.3
Cleaning Materials7.4
Safety8
Preparation of Apparatus9
Supplementary Service Information9.1
General Engine Inspection9.2
Intake Air System9.3
Cooling System9.4
Engine Cooling System Cleaning9.5
Instrumentation Calibration Requirements9.6
Engine Crankcase Cleaning9.7
Additional Oil Filter9.8
Flushing Procedure Components9.9
Flushing Procedures9.10
Piston Cleaning Preparation9.11
Cylinder Head9.12
Fuel Nozzle9.13
Measurement9.14
Procedure10
Engine Break-in10.1
Pre-Test Preparations10.2
Warm-up Procedure10.3
Operating Conditions10.4
Periodic Measurements10.5
Engine Oil Level10.6
Oil Addition Procedure10.7
Cool-Down Procedure10.8
Shutdowns10.9
Fuel System10.10
Brake Specific Oil Consumption (BSOC) Calculation10.11
Inspection11
Preparation11.1
Inspection11.2
Rater Training11.3
Referee Ratings11.4
Calibration of Test Method12
Requirements12.1
Reference Oils12.2
Test Numbering12.3
Definition of a Test12.4
New Laboratories and New Test Stands12.5
Frequency of Calibration Tests12.6
Specified Test Parameters12.7
Acceptance of Calibration Tests12.8
Failing Reference Oil Calibration Tests12.9
Non-Standard Tests12.10
Severity Adjustments and Control Charting12.11
Test Reporting12.12
Reporting Reference Results12.13
Analysis of Reference Oils12.14
Precision and Bias13
Precision13.1
Bias13.2
Keywords14
ANNEXES
Figures and SchematicsAnnex A1
Report FormsAnnex A2
Data DictionaryAnnex A3
Test Fuel InformationAnnex A4
APPENDIXES
Humidity Correction FactorsAppendex X1
Report Form ExamplesAppendix X2
1M-PC Multiple TestingAppendix X3
 
2. Referenced Documents

D482-25

Standard Test Method for Ash from Petroleum Products

D524-15(2025)e1

Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products (Includes all amendments and changes 8/11/2025).

D613-26

Standard Test Method for Cetane Number of Diesel Fuel Oil

D97-17b(2022)

Standard Test Method for Pour Point of Petroleum Products (Includes all amendments and changes 11/29/2022).

D664-24

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

D1319-26

Standard Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption

D4052-22

Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

D1796-22

Standard Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure)

D2422-24

Standard Classification of Industrial Fluid Lubricants by Viscosity System

D2425-23

Standard Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry

D2500-23

Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels

D2622-26

Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry

D4863-13

Standard Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants (Withdrawn 2022)

D5302-01a

Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation and Wear in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions (Withdrawn 2003)

D5844-98

Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Rusting (Sequence IID) (Withdrawn 2003)

D5862-09

Standard Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine (Withdrawn 2009)

D6202-02

Standard Test Method for Automotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the Sequence VIA Spark Ignition Engine (Withdrawn 2009)

SAE J304

D4175-24e2

Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants (Includes all amendments and changes 6/9/2026).

D4294-24

Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry

D4485-24

Standard Specification for Performance of Active API Service Category Engine Oils

Lubricating Oil, Internal Combustion Engine, Combat/Tactical Service

ASTM Deposit Rating Manual 20

(formerly CRC Manual 20) For Stock #TMCMNL20, visit the ASTM website, www.astm.org, or contact ASTM International Customer Service at service@astm.org.

D86-23ae2

Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Includes all amendments and changes 11/4/2024).

D93-26

Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

D130-26

Standard Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

D235-22

Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)

D445-26

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