July 12, 2007 16:52 ET

Advisory: Petro-Canada Q2 2007 Results

CALGARY, ALBERTA--(Marketwire - July 12, 2007) - Petro-Canada will host a conference call for analysts and investors on Thursday, July 26, 2007 at 7:00 a.m. Mountain time (9:00 a.m. Eastern time) to discuss second quarter results, which will be released on July 26, 2007. The media will be invited to ask questions following the analysts and investors. If you are unable to join us on July 26, a postview of the conference call will be available until October 24, 2007.

Presenters:            Ron A. Brenneman, President and CEO
                       Harry Roberts, Executive Vice-President and CFO

Conference Call Host:  Ken Hall, Sr. Director, Investor Relations

Date:                  July 26, 2007

Time:                  7:00 a.m. Mountain time (9:00 a.m. Eastern time)

Telephone:             Participants: 1-888-458-1598 (Toll-free N. America);
                       00-800-8358-7111 (Toll-free International);
                       416-883-0139 or 403-232-6311. Access code: 63215#


Postview:              A postview of the audio webcast will be available
                       one hour after the conclusion of the conference call
                       and will be accessible until October 24, 2007 through
                       1-877-653-0545 (N. America) and 403-232-0933
                       (International); conference ref. #: 506954#

Petro-Canada is one of Canada's largest oil and gas companies, operating in both the upstream and downstream sectors of the industry in Canada and internationally. The Company creates value by responsibly developing energy resources and providing world class petroleum products and services. Petro-Canada is proud to be a National Partner to the Vancouver 2010 Olympic and Paralympic Winter Games. Petro-Canada's common shares trade on the Toronto Stock Exchange (TSX) under the symbol PCA and on the New York Stock Exchange (NYSE) under the symbol PCZ.

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