COOLANT
Set to 4 different clues across 4 published puzzles, most often “Nuclear reactor need” — The New York Times, Saturday, 26 June 1999.
7 letters
Every clue on record, most used first
- Nuclear reactor needonce
The New York Times — Saturday, 26 June 1999
- Core fluidonce
The New York Times — Friday, 7 November 1997
- Engine fluidonce
The New York Times — Sunday, 22 December 1996
- Radiator fluidonce
The New York Times — Thursday, 1 September 1994