| Clue | Source | Date |
|---|---|---|
| Driving drains them | Universal | 15 Jan 2025 |
| They may need fillings | New York Times | 03 Dec 2023 |
| They're filled at filling stations | Premier Sunday | 27 Aug 2023 |
| Fuel containers | Eugene Sheffer | 03 Feb 2020 |
| What filler necks connect to | New York Times | 05 Sep 2019 |
| What filler necks connect to |