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The oil and elastomer compatibility test method CEC L-39-T-96 offered by Southwest Research Institute (SwRI) determines the compatibility of lubricating oils and cured elastomers used in the automotive industry.
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| Gasoline and Diesel Engines |
Gasoline and Diesel Engines with Aftertreatment Devices |
Heavy-Duty Diesel Engines |
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A1/B1-08 A3/B3-08 A3/B4-08 A5/B5-08 |
C1-08 C2-08 C3-08 C4-08 |
E4-08 E6-08 E7-08 E9-08 |
CEC L-39-T-96 Test Parameters
Test specimens are cut from slabs of the reference elastomer to be tested and are immersed in the oil being tested for a given period of time at a given temperature.
Pass/Fail Criteria
The pass/fail criteria include maximum variation of characteristics after immersion for 7 days in fresh oil without pre-aging
| Gasoline and Diesel Engines | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -22/+1 | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -40/+10 | -15/+18 | -30/+10 | -20/+10 | |
| Elongation at Rupture, % | -50/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | -1/+22 | -5/+5 | |
| Gasoline and Diesel Engines with Aftertreatment Devices | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -22/+1 | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -40/+10 | -15/+18 | -30/+10 | -20/+10 | |
| Elongation at Rupture, % | -50/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | -1/+22 | -5/+5 | |
| Heavy-Duty Diesel Engines | |||||
| Property | Elastomer Type | ||||
| RE1 | RE2-99 | RE3-04 | RD4 | AEM (VAMAC) | |
| Hardness DIDC, points | -1/+5 | -5/+8 | -25/+1 | -5/+5 | As per Daimler-Chrysler |
| Tensile Strength, % | -50/+10 | -15/+18 | -45/+10 | -20/+10 | |
| Elongation at Rupture, % | -60/+10 | -35/+10 | -20/+10 | -50/+10 | |
| Volume Variation, % | -1/+5 | -7/+5 | -1/+30 | -5/+5 | |
*Association des Constructeurs Européens d'Automobiles/European Automobile Manufacturers Association.
For more information about oil/elastomer compatibility evaluation (CEC L-39-T-96) capabilities at SwRI or how you can contract with SwRI, please contact Becky Grinfield at bgrinfield@swri.org or (210) 522-3652.
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Contact Information |
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Oil/Elastomer Compatibility Evaluation (CEC L-39-T-96) (210) 522-3652 |
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Related Terminology |
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CEC L-39-T-96 elastomer compatibility test ACEA lubricant evaluations ACEA 2008 specifications oil compatibility evaluations lubricant analysis compatibility of lubricating oils standardized lubricant testing |
| Petroleum Products Research Department | Fuels and Lubricants Research Division | SwRI Home |
Southwest Research Institute® (SwRI®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 12 technical divisions.
November 11, 2009