| Clue | Source | Date |
|---|---|---|
| Fuel obtained from well in ground (5,3) | ||
| Fuel from well in ground | The Guardian Cryptic | 23 Aug 2023 |
| Certain product of pyrolysis | New York Times | 09 Dec 2018 |
| Some petroleum | New York Times | 07 Jul 2018 |
| Certain product of pyrolysis | ||
| Some petroleum | ||
| Petroleum produced from rock fragments | LA Times Daily | 12 Feb 2017 |
| Petroleum produced from rock fragments | ||
| Type of petroleum | ||
| Rock-derived fuel | ||
| Kerosene source | ||
| Kind of crude | ||
| Petroleum distillate |