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Code of Practice

The 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).

Lubricant marketers making claims against the ACEA Oil Sequences are required by ACEA to submit a  Letter of Conformance to ATIEL.


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

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.’