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Evaporative loss laboratory evaluation method CEC L-40-A-93 determines the evaporative loss of lubricating oils using the NOACK evaporative tester. Offered by Southwest Research Institute (SwRI), this method relates to one set of operating conditions but may be readily adapted to other conditions if required.
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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-40-A-93 Evaluation Parameters
A measured quantity of an oil sample is placed in an evaporation crucible, which is then heated to 250°C with a constant flow of air drawn through it for 60 minutes. The loss of mass of the oil is determined. The reproducibility of the method is dependent on the mandatory use of a standard apparatus and procedure. The use of automated equipment is permissible as long as the requirements established by the CEC Working Group, under whose jurisdiction this procedure falls, are satisfied. The evaporative loss is defined as that mass of oil lost when a sample is heated in a test crucible through which a constant flow of air is drawn.
Pass/Fail Criteria
| Gasoline and Diesel Engines | ||||
| Property | Limits (%) | |||
| A1/B1-08 | A3/B3-08 | A3/B4-08 | A5/B5-08 | |
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Max.
Weight Loss After 1 Hour at 250°C |
≤15 | ≤13 | ≤13 | ≤13 |
| Gasoline and Diesel Engines with Aftertreatment Devices | ||||
| Property | Limits (%) | |||
| C1-08 | C2-08 | C3-08 | C4-08 | |
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Max.
Weight Loss After 1 Hour at 250°C |
≤13 | ≤13 | ≤13 | ≤11 |
| Heavy-Duty Diesel Engines | ||||
| Property | Limits (%) | |||
| E4-08 | E6-08 | E7-08 | E9-08 | |
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Max.
Weight Loss After 1 Hour at 250°C |
≤13 | ≤13 | ≤13 | ≤13 |
*Association des Constructeurs Européens d'Automobiles/European Automobile Manufacturers Association.
For more information about our evaporative loss evaluation capabilities, 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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Evaporative Loss Evaluation (210) 522-3652 |
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Related Terminology |
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CEC L-40-A-93 evaporative loss evaluation ACEA lubricant test ACEA 2008 specifications lubricant analysis evaporative loss of lubricating oils NOACK evaporative tester 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 11 technical divisions.
June 16, 2011