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Code of Practice

ATIEL CoP 21 Cover medThe ATIEL Code of Practice (right) is accepted industry-wide as best practice for the development and manufacture of engine lubricants conforming to ACEA (the European Automobile Manufacturers Association) performance requirements.

It has helped to establish standards and quality guarantees for lubricants made or marketed by oil companies that adhere to its guidelines. It provides a benchmark for auditing the development and production of lubricants and ensuring the validity of performance claims made for them.

The ATIEL Code of Practice is updated every one to two years to reflect changes in technical performance specifications, engine testing etc in new evolutions of the ACEA Oil Sequences (see chart below).

To ensure that you are aware of, and always using, the latest version of the ATIEL Code of Practice you can sign up to receive automatic notification of changes or updates by e-mail (far right).

ACEA Oil Sequence Issue ATIEL Code of Practice Issue
2008 Issue 16
2010 Issue 17
2012 Issue 19*
2016 Issues 20 and 21

*Issue 18 was an editorial update with no change to technical requirements.

What's New in ATIEL Code of Practice Issue 21?

New technical content:

  • the introduction of a new VGRA Guideline for the EP6CDT test and worked examples

New structure and format:

  • clarification of some definitions;

  • updates to the sections on the EELQMS to align them more closely with the EELQMS document and amendments to Sections 9 and Appendix D to take into account the change to administration of the Letters of Conformance scheme to SAIL - the Services to Associations and Industry in the Lubricants Sector company

ACEA performance claims
Lubricant marketers making claims against the ACEA Oil Sequences are required by ACEA to sign a Letter of Conformance, which confirms compliance with the requirements of the  European Engine Lubricants Quality Management System (EELQMS), and submit it to ATIEL, which administers the System.

Code of Practice Archive
Previous issues of the Code of Practice are available here.

Disclaimer: ‘The ATIEL Code of Practice has been prepared with utmost care and on the basis of the highest professional standards.  However, in no event shall ATIEL be liable for any direct, indirect, incidental, consequential, special or punitive damages of any kind or nature, including without limitation lost profits, arising out of or relating to the use of this Code of Practice, whether such liability is based in contract, tort, negligence, strict liability or otherwise. The users of this Code of Practice remain responsible for all aspects of product liability.’


ACEA 2016 Oil Sequences

Download the latest version of the ACEA Oil Sequences here.

This new update provides:
- A new revision of the ACEA sequences with the introduction of the new CEC L-107-19 test and limits (A/B and C categories) that replaces the Daimler M271 test and limits.
- An update to the ASTM D892 method (used to quantify the foaming tendency of engine oil) in respect of the applicability of test Option A (with or without the Option A sample pre-test procedure is permitted)