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                                                                    EXHIBIT 4(m)



                                PENNZOIL COMPANY
                          SAVINGS AND INVESTMENT PLAN
                              FOR HOURLY EMPLOYEES

                   (As Established Effective January 1, 1989)


                                Second Amendment

                 Pennzoil Company, a Delaware corporation (the "Company"),
having established the Pennzoil Company Savings and Investment Plan for Hourly
Employees, effective January 1, 1989 and as thereafter amended (the "Plan"),
and having reserved the right under Section 10.4 thereof to amend the Plan,
does hereby amend the Plan, effective as of April 1, 1994, as follows:

                 1.       The first sentence of Section 4.1 of the Plan is
hereby deleted and replaced with the following:

                 "Except as provided below, each eligible Employee, who elects
         to make Pre-Tax Contributions for a Plan Year shall initially elect to
         defer a portion of his Compensation in whole percentages of not less
         than one percent (1%) and not more than twelve percent (12%), subject
         to the limitations set forth in the following schedule:



                                                         Maximum Pre-Tax       
                    Years of                              and After-Tax       
                 Participation                          Contribution Rate      
                 -------------                          -----------------     
                                                                         
                Less than 5 years                              9%              
                5 - 10 years                                  10%              
                More than 10 years                            12%              
                                                             

                 Each eligible Employee, represented by either Local #175
         International Brotherhood of Teamsters, Chauffeurs, Warehousemen and
         Helpers of America or Local #699 United Electrical, Radio and Machine
         Workers of America who elects to make Pre-Tax Contributions for a Plan
         Year shall initially elect to defer a portion of his Compensation in
         whole percentages of not less than one percent (1%) and not more than
         six percent (6%), subject to the limitations set forth in the
         following schedule:





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                                                         Minimum Pre-Tax and   
                    Years of                                  After-Tax        
                 Participation                            Contribution Rate    
                 -------------                            -----------------    
                                                                         
                Less than 5 years                                3%            
                5 - 10 years                                     4%            
                More than 10 years                               6%"           
                                                            

                 2.       The first sentence of Section 4.2 of the Plan is
hereby deleted and replaced with the following:

                 "Except as provided below, each eligible Employee, regardless
         of whether he has elected to defer any percentage of his salary in the
         form of Pre-Tax Contributions to the Plan, may elect to make After-Tax
         Contributions of not less than one percent (1%) and not more than
         twelve percent (12%) of his Compensation; provided, however, that the
         aggregate of a Member's Pre-Tax Contributions and After-Tax
         Contributions shall be limited to the maximum rate based on Years of
         Participation as set forth in Section 4.1 and shall not total, in any
         event, more than twelve percent (12%) of the Member's Compensation.


                 Each eligible Employee represented by either Local #175,
         International Brotherhood of Teamsters, Chauffeurs, Warehousemen and
         Helpers of America or Local #699 United Electrical Radio and Machine
         Workers of America, regardless of whether he has elected to defer any
         percentage of his salary in the form of Pre-Tax Contributions to the
         Plan, may elect to make After-Tax Contributions of not less than one
         percent (1%) and not more than six percent (6%) of his compensation
         provided, however, that the aggregate of a Member's Pre-Tax
         Contributions and After-Tax Contributions shall be limited to the
         maximum rate based on Years of Participation as set forth in Section
         4.1 and shall not total, in any event, more than six percent (6%) of
         the Member's Compensation."

                 3.       The first sentence of Section 4.3 of the Plan is
hereby amended to read as follows:

                 "For each Plan Year, the Company shall make a Matching
         Contribution to the Trust Fund on behalf of the Eligible Members in an
         amount equal to the applicable percentage (as set forth below) of the
         first 3%, 4% or 6% as applicable of the Pre-Tax Contributions and
         After-Tax Contributions elected or contributed by the Eligible Members
         during such Plan Year and not withdrawn under Article VI during such
         Plan Year:





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                                                                  Total Percentage of
                                  Applicable Percentage          Member Contributions
          Years of                  Employer Matching            Eligible for Employer
        Participation                  Contribution              Matching Contribution
        -------------             ---------------------          ---------------------
                                                                   
         Less than 5 years                 50%                             3%
         5 - 10 years                      75%                             4%
         More than 10 years               100%                             6%"


                 IN WITNESS WHEREOF, Pennzoil Company has caused these presents
to be executed by its duly authorized officers in a number of copies, all of
which shall constitute one and the same instrument, which may be sufficiently
evidenced by any executed copy thereof, this 20th day of May, 1994, but
effective as of April 1, 1994.

                                                 PENNZOIL COMPANY



                                                 By:  HARRY C. MITCHELL

ATTEST:

LINDA F. CONDIT
Secretary

(SEAL)





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