| Clue | Source | Date |
|---|---|---|
| Fuel dispensers | Universal | 27 Dec 2022 |
| Premium locations? | Universal | 17 Sep 2022 |
| Shell fixtures | The Washington Post Sunday | 30 Sep 2018 |
| Where regular payments are made | LA Times Daily | 17 Jun 2017 |
| Where regular payments are made | The Washington Post | 17 Jun 2017 |
| Where regular payments are made | ||
| Octane rating sites | ||
| Octane rating sites | ||
| Service-station features | ||
| Fueler's shoes? |