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Radiator cap coolant reservoir.
Some older vehicles don t include a reservoir but most modern vehicles have a small tank for filling and checking the coolant level.
Fill your reservoir with antifreeze up to the full line at the middle of the plastic tank you don t have to add water because the water will evaporate in a few days and what is left is antifreeze which will not evaporate.
At operating temperature coolant can evaporate from the open system.
The reservoir should be clear plastic so you can easily see the level of coolant and the maximum fill line.
A cap that is no longer sealing could also cause a leak.
In normal circumstances the coolant gets ousted out from the reservoir overflow tube the moment the engine starts warming up.
Any time there is a coolant leak there is a possibility of the engine overheating.
There are signs to look for that may indicate the radiator cap is losing its integrity.
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Open your hood and locate your radiator and coolant reservoir.
While this may seem to be a minor issue it can lead to dire consequences.
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Check your coolant cap for signs of wear.
If you have a bad radiator cap the coolant could get released too quickly and cause the reservoir to overflow.
While you re in there check to make sure your coolant overflow tank is working properly.
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If a puddle of coolant is left behind it could indicate that cap is improperly releasing pressure or the reservoir is overflowing.
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A coolant reservoir keeps the recommended coolant level reduces air bubbles in the system prevents rust and gives less you fewer reasons to open the radiator cap.
This leakage is visible and may result from bad reservoir cap.
It then gets passed to the radiator to lose the heat.
Coolant is sucked from the reservoir by a water pump and transferred to the engine.
Coolant goes into the reservoir tank as it expands.
While overheating signals an obvious issue that needs to be looked at another easy indicator is leaking.
There may be times that the reservoir radiator cap may turn out to be faulty.
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The radiator cap releases the extra pressure by sending some coolant into the overflow tank.