1.1 This test method describes a two-stroke cycle diesel engine test procedure for evaluating engine oils for certain high-temperature performance characteristics, particularly cylinder liner scuffing and piston ring face distress, but also including port plugging, slipper bushing, and piston skirt distress. Such oils include both single viscosity SAE grade and multiviscosity SAE grade oils used in diesel engines. It is commonly known as the 6V92TA test. (See Note 1.)

Note 1-Companion test methods used to evaluate other engine oil performance characteristics for specification requirements are discussed in Engine Oil tests-SAE J304.

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. Specific hazard statements are given in Notes 2 through 11.

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

1.4 This test method is arranged as follows:

Section Scope 1 Referenced Documents 2 Terminology 3 Summary of Test Method 4 Significance and Use 5 Apparatus--General Description 6 Apparatus--Laboratory and Test Stand Requirements 7 Apparatus--Test Engine 8 Test Engine 8.1 Engine Parts 8.2 Special Cleaning Procedures 8.3 Periodic Maintenance Inspections 8.4 Engine Build-up Procedures 8.5 Measurement Instrumentation 9 Temperatures 9.1 Pressures 9.2 Reagents and Materials 10 Test Fuel 10.1 Test Oil 10.2 Coolant 10.3 Sealing and Anti-seize Compounds 10.4 Hazards 11 Laboratory and Test Stand Calibration 12 Test Procedure 13 Pre-Test Procedure 13.1 Engine Operating Procedure 13.2 Periodic Measurements and Functions 13.3 Diagnostic Data Review 13.4 End of Test Procedure 13.5 Interpretation of Test Results 14 Parts Rating Area--Environment 14.1 Piston Rings 14.2 Cylinder Liner 14.3 Piston Pin Slipper Bushing 14.4 Rocker Arm Bushing 14.6 Referee Rating 14.7 Preparation of Report 15 Test Numbering 15.1 Operational Data 15.2 Photographs 15.3 Electronic Transmission of Test Results 15.4 Precision and Bias 16 Keywords 17 Annexes ASTM Test Monitoring Center A1. Detailed Specifications and Drawings of Apparatus A2. Engine Part Number Listing A3. Test Fuel Analysis A4. Report Forms A5. Data Dictionary A6. Appendixes Oil Producers Affidavit X1. English to Metric Conversion for the 6V92TA Test X2. Engine Build-up Forms X3.