##### 



EXHIBIT 12

PENNZOIL-QUAKER STATE COMPANY
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

|                                                                             |  |                              |         |      |  |   |        |  
|---------------------------------------------------------------------------- |  | ---------------------------- | ------- | ---- |  | - | ------ | -
|                                                                             |  | For the six months ended    
|                                                                             |  | June 30,                    
|                                                                             |  |                             
|                                                                             |  | 2002                         |         | 2001
|                                                                             |  |                              |         |     
|                                                                             |  | (Dollar amounts expressed in
|                                                                             |  | thousands)                  
|Income (loss) from continuing operations
before income from equity investees |  | $                            | 32,437  |      |  | $ | (5,809 | )
|Distribution of income from equity investees                                 |  |                              | 6,345   |      |  |   | 7,400  |  
|Amortization of capitalized interest                                         |  |                              | 75      |      |  |   | 425    |  
|Income tax provision                                                         |  |                              | 33,900  |      |  |   | 308    |  
|Interest charges                                                             |  |                              | 60,507  |      |  |   | 62,263 |  
|                                                                             |  |                              |         |      |  |   |        |  
|Income before income tax provision and interest charges                      |  | $                            | 133,264 |      |  | $ | 64,587 |  
|                                                                             |  |                              |         |      |  |   |        |  
|Fixed charges                                                                |  | $                            | 60,507  |      |  | $ | 62,263 |  
|                                                                             |  |                              |         |      |  |   |        |  
|Ratio of earnings to fixed charges                                           |  |                              | 2.20    |      |  |   | 1.04   |  
|                                                                             |  |                              |         |      |  |   |        |  

DETAIL OF INTEREST AND FIXED CHARGES

|                                                                                                                            |                        |   |                          |        |      |   |        |        | 
|--------------------------------------------------------------------------------------------------------------------------- | ---------------------- | - | ------------------------ | ------ | ---- | - | ------ | ------ | 
|                                                                                                                            |                        |   | For the six months ended
|                                                                                                                            |                        |   | June 30,                
|                                                                                                                            |                        |   |                         
|                                                                                                                            |                        |   | 2002                     |        | 2001
|                                                                                                                            |                        |   |                          |        |     
|                                                                                                                            |                        |   | (Expressed in thousands)
|Interest charges per Consolidated Statement of Operations
which includes amortization of debt discount, expense and premium |                        | $ | 45,855                   |        |      | $ | 48,877 |       
|Add: portion of rental expense representative of interest factor (1)                                                        |                        |   | 14,652                   |        |      |   | 13,386 |       
|                                                                                                                            |                        |   |                          |        |      |   |        |       
|                                                                                                                            | Total fixed charges    |   | $                        | 60,507 |      |   | $      | 62,263 | 
|Less: interest capitalized per Consolidated Statement of Operations                                                         |                        |   |                         |        |      |   |       |       
|                                                                                                                            |                        |   |                          |        |      |   |        |       
|                                                                                                                            | Total interest charges |   | $                        | 60,507 |      |   | $      | 62,263 | 
|                                                                                                                            |                        |   |                          |        |      |   |        |       



---

|(1) |  | Interest factor based on managements estimates and approximates
one-third of rental expense.
|--- |  | ---------------------------------------------------------------------------------------------