Cooling System
The engine coolant level is controlled or maintained by the recovery system. The recovery system components are the overflow bottle, radiator filler neck, radiator pressure cap and connecting hose.
As coolant operating temperature increases, the expanding (heated) excess coolant is forced out of the radiator, past the pressure cap, and into the overflow bottle. As engine coolant temperature decreases, the contracting (cooled) coolant is drawn back up from the tank, past the pressure cap, and into the radiator.
TIP
Some coolant level drop on new vehicles is normal
as the system is purging itself of trapped air. Observe coolant levels
and maintain as recommended by adding coolant to the overflow bottle.