Exhibit 99.1

Imperial Oil Limited
237 Fourth Avenue S.W.
Calgary, Alberta
Canada T2P 3M9 News Release

Imperial Oil and Government of Alberta Sign Agreements
to Amend Syncrude Crown Agreement

Calgary, November 18, 2008 — Imperial Oil, along with the other Syncrude Joint Venture owners,has signed agreements with the Government of Alberta to amend the existing Syncrude Crown agreement.

Imperial Oil is one of Canada’s largest corporations and a leading member of the country’s petroleum industry. It is one of the country’s largest producers of crude oil and natural gas, is the largest petroleum refiner, and has a leading market share in petroleum products sold through a coast-to-coast supply network that includes about 1,900 service stations.

FOR MORE INFORMATION, CONTACT:

Dee Brandes
Investor Relations
Imperial Oil Limited
(403) 237-4537 Kimberley Fox
Public Affairs
Imperial Oil Limited
(403) 237-2710

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