The Coordinating European Council

Maintaining existing tests on an ongoing basis, concentrating on quality assurance

What is CEC?

CEC is an Industry-based organisation which develops Test Methods for the performance testing of Automotive Engine Oil, Fuels & Transmission Fluids (using gasoline & diesel engines). In addition, it covers Marine & Large Engine Oils, Two-stroke Engine Oils & Associated Bench Tests.

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Invitation to first TDG meeting Mercedes M254 gasoline engine wear test (TDG-L-122)

CEC is launching a new Test Development Group (TDG-L-122) for the development of a Mercedes M254 gasoline engine wear test (pre-developed OEM test). A first TDG meeting is planned for 24th (whole day) of September at APL in Landau, Germany (online participation is possible). Information on accommodation and meeting room and other logistical details will follow to those who have expressed their interest. At this stage, the cost to join the TDG is zero, and the sponsor cost will be clarified once we know the necessity of additional tests, the reimbursement of development costs, and the exact number of sponsors. Please download the invitation letter and a short description of the test for reference.

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TDG-F-05-93 Closure

TDG-F-05-93 inlet valve cleanliness test has been back in test development status since October 2021. The group decided by consensus at the September 2025 meetings in Vienna to close the group. This was approved by the CEC MB in December 2025.

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CEC Member Organisations