Notification of the Department of Energy Business Re: Specification for Appearance and Quality of Engine Oils B.E. 2554 (2011).

The Regulations are enacted to specify the appearance and quality of engine oils that are suitable and in accordance with international standards, and in order to be able to supervise oil traders more circumspectly.
The appearance and quality of engine oils shall be classified into 2 types as follows: (1) Chemical and physical properties which shall comply with the details prescribed in the annex of this notification. (2) Engine performance which shall be notified by an oil trader and approved by the Director-General. After the Director-General has approved the appearance and quality of the engine oil notified by the oil trader, the Department of Energy Business will grant the oil trader a certificate of approval according to Form Thor Por Kor 415 attached hereto, in which a registration number is given.