| Subsidiary | Pennzoil-Quaker State Company |
| Parent | Shell Oil Company |
| Start Date | 2002-00-00 |
| Is Current | yes |
| Notes | In 2002, Shell Oil Co., a wholly owned member of the Royal Dutch/Shell Group, acquired Pennzoil-Quaker State Co. for $1.8 billion in cash and $1.1 billion in debt. |