| Clue | Source | Date |
|---|---|---|
| Regular vehicle maintenance suggested by this puzzle's circles | LA Times Daily | 15 Aug 2018 |
| Regular vehicle maintenance suggested by this puzzle's circles | The Washington Post | 15 Aug 2018 |
| Regular vehicle maintenance suggested by this puzzle's circles | ||
| It may accompany a lube job | ||
| Mechanic's job, literally illustrated in this puzzle | ||
| Mechanic's job, literally illustrated in this puzzle |