EXHIBIT 23 HOWELL CORPORATION INDEPENDENT AUDITORS' CONSENT To Howell Corporation: We consent to the incorporation by reference in Registration Statement Nos. 33-28389 and 333-29089 of Howell Corporation on Form S-8 of our report dated March 22, 1999, appearing in this Annual Report on Form 10-K of Howell Corporation for the year ended December 31, 1998. DELOITTE & TOUCHE LLP Houston, Texas March 24, 1999