The Wiser Oil Company

Exhibit 32.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906

OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of The Wiser Oil Company (the “Company”) on Form 10-K for the period ending December 31, 2003, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Richard S. Davis, Vice President of Finance of the Company, certify pursuant to 18 U.S.C. sec.1350, as adopted pursuant to sec.906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

This certification is made solely for the purpose of U.S.C. Section 1350, and not for any other purpose.

/s/    RICHARD S. DAVIS        

Richard S. Davis

Vice President of Finance

March 26, 2004

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.