Answer: coolant

AnswerCrossword Clue
COOLANTAntifreeze, for one.
coolanta fluid used to cool engines
coolantsubstance used to reduce the temperature of a system
COOLANTAir or water, perhaps
COOLANTAntifreeze e.g.
COOLANTFreon, e.g.
COOLANTCore fluid
COOLANTEngine fluid
COOLANTHeat-reducing fluid
COOLANTFreon, for one
COOLANTNuclear reactor fluid
COOLANTCar-radiator contents
COOLANTNuclear reactor need
COOLANTRadiator fill
COOLANTRadiator fluid
COOLANTCar radiator need
COOLANTRadiator additive