SwRI: Mercedes OM646LA Wear Test, CEC?L-99-08), International Lubricant Testing, ACEA Lubricant Test

	The Mercedes OM646LA Wear Test at SwRI evaluates a lubricants ability to prevent engine wear

Mercedes OM646LA wear test method CEC L-99-08 is offered by Southwest Research Institute (SwRI) to evaluate engine oil performance with regards to low-temperature lubricant thickening and component wear under severe operating conditions.

ACEA 2008 Specifications

The Mercedes OM646LA wear test is part of ACEA 2008 specifications:

Field Service Simulated

The CEC-L-99-08 test simulates diesel engine wear in European climates.

CEC L-99-08 Test Fixtures

A Mercedes 2.2-liter common rail, inline 4-cylinder, turbocharged, direct-injected automotive diesel engine (OM646LA) mounted on an engine dynamometer test stand is used for this test.

CEC L-99-08 Test Parameters

The 300-hour, 15-phase test cycle utilizes idle, part-load, and full-load operating conditions along with a cold engine soak every hour. Oil additions are determined by sump oil level.

CEC-L-99-08 Test Part Evaluations

Camshafts, bore, tappets, bearings and piston rings are measured for wear. Engine oil sump, timing cover, rocker cover and valve deck are rated for sludge deposits.

Used Engine Oil Analysis

Pass/Fail Criteria

*Association des Constructeurs Européens d'Automobiles/European Automobile Manufacturers Association.

For more information about Mercedes OM646LA wear test (CEC L-99-08) capabilities at SwRI or how you can contract with SwRI, please contact Raham Kirkwood at rkirkwood@swri.org or (210) 522-5905.