ASTM D6987 Standard Test Method for Evaluation of Diesel Engine Oils in T-10 Exhaust Gas Recirculation Diesel Engine
4. Summary of Test Method
4.1 The test operation involves use of a Mack E-TECH V-MAC III diesel engine with exhaust gas recirculation (EGR). A warm-up and a 1 h break-in are followed by a two-phase test consisting of 75 h at 1800 r/min and 225 h at 1200 r/min, both at constant speed and torque.
4.2 Take oil samples periodically and analyze for viscosity increase and wear metals content.
4.3 Rebuild the engine prior to each test. Disassemble, solvent-clean (see 7.4), measure, and rebuild the engine power section using all new pistons, rings, cylinder liners, and connecting rod bearings in strict accordance with furnished specifications.
4.4 Solvent-clean (see 7.4) the engine crankcase and replace worn or defective parts.
4.5 Equip the test stand with appropriate accessories for controlling speed, torque, and various engine operating conditions.
5. Significance and Use
5.1 This test method was developed to evaluate the wear performance of engine oils in turbocharged and intercooled four-cycle diesel engines equipped with EGR. Obtain results from used oil analysis and component measurements before and after the test.
5.2 The test method may be used for engine oil specification acceptance when all details of the procedure are followed.
