Durango 2WD V8-5.7L Hybrid (2009)
Coolant Reservoir: Description and Operation
Operation
COOLANT RECOVERY CONTAINER
The coolant recovery container works in conjunction with the radiator pressure cap. It utilizes thermal expansion and contraction of the coolant to keep
the coolant free of trapped air. It provides a volume for expansion and contraction of the coolant. It also provides a convenient and safe method for
checking the coolant level and adjusting the level at atmospheric pressure. This is done without removing the radiator pressure cap. The system also
provides some reserve coolant to the radiator to cover minor leaks and evaporation or boiling losses.
As the engine cools, a vacuum is formed in the cooling system of both the radiator and engine. Coolant is then drawn from the coolant tank and returned
to a proper level in the radiator.
