| Clue | Source | Date |
|---|---|---|
| Source of black stuff round island left by probe (3,4) | ||
| Circulatory system part | Newsday | 09 Mar 2024 |
| Crankcase device | New York Times | 17 Feb 2019 |
| Crankcase device | ||
| Valvoline circulator | LA Times Daily | 26 Jul 2015 |
| Valvoline circulator | ||
| Crankcase attachment | ||
| Crankcase part | ||
| Auto part |