The Coordinating European Council

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

Test Methods

Used world-wide for quality control.

TMS

Test monitoring system

Guidelines

Outlines how CEC operates

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.

CEC Activity Report | January - June 2026

August 7th, 2026

The CEC Management Board is pleased to provide you with the CEC Activity Report reporting on the relevant CEC activities in the first half of the year 2026.

CEC Activity Report | July - December 2025

January 26th, 2026

The CEC Management Board is pleased to provide you with the CEC Activity Report reporting on the relevant CEC activities in the second half of the year 2025.

TDG-F-05-93 Closure

January 26th, 2026

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.

Call for Sponsors for the Proposed New OM471 FE 1 Short Test (TDG-L-120)

December 18th, 2025

CEC is re-launching a call for sponsors for the development of this the new OM471 FE 1 Short test (CEC TDG-L-120)‎. The letter of Interest, the Terms of Reference and Needs Statement are available for download. The deadline to express interest to become a TDG sponsor is 16 February 2026.

What is CEC?

CEC Member Organisations