| Clue | Source | Date |
|---|---|---|
| Engine fluids | Eugene Sheffer | 25 Jun 2025 |
| Heat-removing liquids | Premier Sunday | 08 Jun 2025 |
| Trendy insects used in car radiators | ||
| Anti-freeze counterparts | ||
| Radiator fluids | Universal | 28 Dec 2023 |
| Radiator fillers | The Washington Post | 18 Dec 2020 |
| Radiator fillers | LA Times Daily | 18 Dec 2020 |
| Freon and antifreeze, for two | Family Time | 29 Nov 2020 |
| Old couple in the family way rejected, might these take some heat off? | ||
| Coal's not burning due to liquids that prevent heating | ||
| Freon and antifreeze | ||
| Fillers of radiators | ||
| Nuclear reactor needs | ||
| Nuclear reactor needs | ||
| Radiator additives | ||
| Radiator additives | ||
| Freon et al. | ||
| Engine circulators | ||
| Radiator fluids | ||
| Heat-removing substances | ||
| Radiator additives |