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Download Sequence IIIGA Engine Test
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Sequence IIIGA Engine Test (ASTM D7320) Specifications • API SM/SN • ILSAC GF-4/GF-5 Objective • Evaluate the cold-temperature viscosity performance of an end-of-test lubricant sample. Field Service Simulated • High-speed service under relatively high ambient conditions. Test Fixture • 1996/1997 3.8 L Series II General Motors V6 fuel-injected gasoline engine. D019076 Test Parameters • Using unleaded gasoline, the engine runs a 10-minute initial lubricant leveling procedure followed by a 15-minute slow ramp-up to speed and load conditions. • The engine then operates at 94 kW, 3600 rpm, and 150°C lubricant temperature for 100 hours, interrupted at 20-hour intervals for lubricant level checks. Test Parts Evaluation • None. Used Lubricant Analysis • Apparent viscosity (ASTM D4684) • Cold cranking simulator (ASTM D5293) Pass/Fail Criteria Parameter Pass Limit MRV @ EOT 60,000 cP maximum (original grade or next highest) Yield stress <35 Pa We welcome your inquiries. For additional information, please contact: Martin J. Heimrich Senior Research Engineer (210) 522-3022 [email protected] Benefiting government, industry and the public through innovative science and technology An Equal Opportunity Employer M/F/D/V Committed to Diversity in the Workplace Fuels and Lubricants Research Division Southwest Research Institute 6220 Culebra Road • P.O. Drawer 28510 San Antonio, Texas 78228-0510 swri.org lubricanttesting.swri.org Southwest Research Institute is an independent, nonprofit, applied engineering and physical sciences research and development organization using multidisciplinary approaches to problem solving. The Institute occupies 1,200 acres in San Antonio, Texas, and provides more than 2 million square feet of laboratories, test facilities, workshops and offices for nearly 3,000 employees who perform contract work for industry and government clients. Benefiting government, industry and the public through innovative science and technology An Equal Employment Opportunity/Affirmative Action Employer • Race/ Color/Religion/Sex/Sexual Orientation/Gender Identity/National Origin/ Disabled/Veteran • Committed to Diversity in the Workplace Find us on 08-0616 JCN 254929 tp
