16 July 2008 Subject: Litigation Update To: President The Stock Exchange of Thailand We refer to the customs basestock criminal case against Esso (Thailand) Public Company Limited ("Esso") disclosed in our Prospectus in "Section 2" under the heading "Legal Proceedings". As background, between 1987 and 1988, Esso imported various shipments of non- branded lubricant basestocks. The basestocks were declared to Customs at the time of import and custom duties were assessed by Customs and duly paid on the imports. Several years later, the Customs department alleged that the basestocks were incorrectly described as non-branded basestocks and should have been declared as branded basestocks instead, which carry a higher duty. Customs then assessed additional duties on the basestocks and a civil case was brought against Esso for the additional duties. Esso paid a sum of Baht 17 million as a result of this claim. In addition in 1999, the public prosecutor initiated a criminal case against Esso under the Customs Act for underpayment of duties, and in 2004, the Southern Bangkok Criminal Court fined Esso Baht 436 million. Esso filed an appeal against the judgment in the Court of Appeal in 2005. On July 16, 2008, the Court of Appeal confirmed the judgment of the Southern Bangkok Criminal Court against Esso. Esso will be filing an appeal to the Supreme Court and in connection with this will apply for stay of execution of the fine pending the outcome of the Supreme Court appeal. Please be informed accordingly. Yours truly Esso (Thailand) Public Company Limited (Mr. Jim M. Anthony)