EXHIBIT 23.3


                               LETTER OF CONSENT

                         CONSENT OF PETROLEUM ENGINEERS

  As independent petroleum engineers, we hereby consent to the incorporation
by reference in the Registration Statements on Form S-8 relating to the stock
incentive plans of The Wiser Oil Company (the "Company"), (Nos. 33-44171, 33-
62441, 33-44172, 333-22525 and 333-15083), of certain data from our report
entitled "The Wiser Oil Company Canada Ltd. Reserve Appraisal and Economic
Evaluation effective January 1, 2001" with respect to the oil and gas reserves
of the Company, the future net revenues therefrom and present values
attributable to these reserves included in this Annual Report on Form 10-K/A,
and to all references to our firm included in this Annual Report.

                                Yours very truly,

                                GILBERT LAUSTSEN JUNG ASSOCIATES LTD.


                                /s/ Wayne W. Chow, P. Eng.
                                Vice-President

March 8, 2002
Calgary, Canada