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1.1 This test method covers a laboratory engine test procedure, utilizing a 1977 350 in. displacement (5.7 L) Oldsmobile V-8 engine. The procedure, using leaded gasoline, evaluates the rust inhibition characteristics of engine oils. The test method was designed to relate particularly to short-trip service under typical winter conditions in the upper midwestern United States. The procedure has been correlated with vehicles, using leaded gasoline, in that type of service and prior to 1978, particularly with regard to rusting. It is one of the test methods required to evaluate oils intended to satisfy the API SH category.
1.2 Information Letters are published occasionally by the ASTM Test Monitoring Center (see Appendix X1) to update the test method. Copies of these letters can be obtained by writing the Center.
1.3 The method may not be applicable for the evaluation of engine oils if unleaded gasoline is used.
1.4 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
1.5 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. See Notes 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 15, 16, and 17.
1.6 A Table of Contents follows:Section Scope 1 Referenced Documents 2 Terminology 3 Summary of Test Method 4 Significance and Use 5 Apparatus-Overview 6 Reagents and Materials 7 Preparation of Apparatus 8 Laboratory Ambient Condition 8.1 Assembling the Test Engine 8.2 General Information 8.2.1 Cleaning Engine Parts 8.2.2 Cylinder Block-Preparation 8.2.3 Main Bearings-Installation 8.2.4 Pistons-Fitting and Numbering 8.2.5 Piston Ring End Gaps-Adjustment 8.2.6 Connecting Rod and Piston Assemblies-Installation 8.2.7 Connecting Rod Bearings-Installation 8.2.8 Camshaft-Installation 8.2.9 Harmonic Balancer and Oil Slinger-Installation 8.2.10 Engine Front Cover and Seal-Installation 8.2.11 Timing Mark Indicator-Modification 8.2.12 Oil Pump-Installation 8.2.13 Dipstick Tube-Installation 8.2.14 Oil Pan-Modification 8.2.15 Cylinder Head-Preparation 8.2.16 Rocker Arm Deflectors-Installation 8.2.17 Valve Lifters-Installation 8.2.18 Pushrods-Installation 8.2.19 Intake Manifolds-Installation 8.2.20 Rocker Covers, Spacers and Gaskets-Installation 8.2.21 Water Inlet Adapter-Installation 8.2.22 Breather Tube-Installation 8.2.23 Thermostat Housing-Installation 8.2.24 Fuel Pump and Eccentric-Installation 8.2.25 Oil Filter Housing-Installation 8.2.26 Oil Sample Line-Installation 8.2.27 Ignition System-Installation 8.2.28 Carburetor-Installation 8.2.29 Accessory Drive Units-Delete 8.2.30 Exhaust Manifolds-Installation 8.2.31 Engine Flywheel and Guards-Installation 8.2.32 Special Parts-Sources 8.2.33 Engine Coolant System-Pressure Checking 8.2.34 Installation of the Assembled Engine on a Test Stand 8.3 Engine Dynamometer-Installation 8.4 Measurement and Control of Operating Conditions 9 Temperature Measurements General Information 9.1.1 Thermocouple Locations 9.1.2 Air-to-Fuel Ratio 9.2 Carburetor Air Supply Humidity 9.3 Exhaust and Exhaust Back Pressure 9.4 Blowby 9.5 Crankcase Pressure 9.6 Oil Pressure at the Oil Pump Outlet 9.7 Oil Pressure at the Engine Oil Filter 9.8 Carburetor Inlet Air Pressure 9.9 Intake Manifold Vacuum 9.10 Rocker Cover Coolant Pressure 9.11 Breather Tube Coolant Pressure 9.12 Intake Manifold Crossover Coolant Outlet Pressure 9.13 Engine Speed and Load 9.14 Procedure-at Test Start 10 External Cooling System-Cleaning 10.1 Engine Coolant Jacket-Cleaning 10.2 Coolant Charging 10.3 Test Oil Charging 10.4.1 Engine Startup 10.5 Procedure-During the Test 11 Engine Shutdown 11.1 Oil Sampling 11.2 Checking Oil Samples for Glycol Content 11.3 Oil Leveling 11.4 Test Periods 11.5 Non-scheduled Shutdowns 11.6 Data Recorded-Hourly Intervals 11.7 Data Recorded-Irregular Intervals 11.8 Engine Operating Conditions 11.9 Procedure-at Test End 12 Interpretation of Results 13 Engine Disassembly and Elapsed Time 13.1 Preparation of Engine Parts for Rating 13.2 Rust Rating 13.3 Photographs of Test Parts 13.4 Permanent Storage of Test Parts 13.5 Report 14 Calculation of Rust Results 14.2 Lifter Plunger Sticking 14.3 Oil Pump Relief Valve Sticking 14.4 Oil Consumption 14.5 Operational Deviations 14.6 Precision and Bias 15 Keywords 16 ANNEXES Engine Test Stand Calibration A1 External Engine Cooling System A2 External Rocker Cover, Intake Manifold and Breather Tube Cooling Systems A3 External Oil Cooling System A4 External Flushing Tank A5 External Coolant Mixing Tank A6 External Fuel System A7 Engine Coolant Preparation A8 Sealing Compound Applications A9 Fastener Torque Specifications and Torquing Procedures A10 Engine Test Parts A11 Coolant Calibration Standards A12 Dipstick Calibration A13 Calculation of Test Severity Adjustments A14 Operational Validity Criteria A15 APPENDIX Test Monitoring Center Information Letters X1