Grand Cherokee 4WD V6-3.7L (2009)
Coolant: Description and Operation
Operation
COOLANT
Coolant flows through the engine block absorbing the heat from the engine, then flows to the radiator where the cooling fins in the radiator transfers the
heat from the coolant to the atmosphere. During cold weather the ethylene-glycol or propylene-glycol coolant prevents water present in the cooling
system from freezing within temperatures indicated by mixture ratio of coolant to water.