Diesel Engine Lubricant Testing
Automotive Engineering



Contact Information

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Contact us:
ae-contact@swri.org

image of lubricant oxidation test procedure

SwRI simulates heavy-duty diesel engine commercial fleet operations in single-cylinder engine test stands.


image of component showing wear

A lubricant’s ability to inhibit component wear is a critical factor during standardized testing.

Diesel engine designs continue to evolve to meet ever-changing emissions and fuel economy requirements. The technologies in newer engines, such as high exhaust gas recirculation (EGR) and exhaust aftertreatment systems along with improved combustion systems and higher cylinder pressures, place increased demands on crankcase lubricants. Lubricants and lubricant test procedures also continue to evolve to meet these demands.

Southwest Research Institute (SwRI) is one of the oldest and largest service providers for the evaluation of engine lubricants used in diesel engines for factory fill and service fill requirements. Facilities and staff are available to evaluate lubricants against the American Petroleum Institute (API) CH-4, CI-4, CI-4 PLUS and CJ-4; CK-4 International Lubricant Standardization and Approval Committee (ILSAC) GF-4 and GF-5; European ACEA lubricant specifications and the Cummins, Mack, and John Deere requirements. Evaluations are also performed with respect to engine sludge, oxidation, wear (camshaft lobes, camshaft followers, piston rings, piston liners, and connecting rod bearings), oil consumption, piston deposits, and fuel economy. New design engine components are also evaluated to determine acceptability with current day lubricants.In addition to engine based testing, SwRI also performs all related analytical bench tests required to qualify lubricants.

SwRI has 43 test stands available for diesel lubricant test procedures, which utilize engines representative of heavy-duty diesel engines operating in modern commercial fleets and off-highway applications, including:

The current API Heavy-Duty Performance Category is CK-4/FA-4

Related Terminology

lubricant testing  •  cran  •  Detroit Diesel DD13

kcase lubricants  •  lubricants  •  lubricant test procedures  •  lubricant procedures  •  lubricant specifications  •  oil testing  •  Mack T-11  •  Mack T-12  •  Cummins ISM  •  Cummins ISB  •  GM RFWT  •  Caterpillar 1N  •  Caterpillar C13  •  EOAT  •  American Petroleum Institute  •  API  •  CH-4  •  CI-4  •  CI-4 PLUS  •  CJ-4  •  sludge  •  oxidation  •  wear  •  oil consumption  •  piston deposits  •  fuel economy

Benefiting government, industry and the public through innovative science and technology
Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 10 technical divisions.
11/08/16