Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. How Long Does a Coolant Reservoir Last?

How Long Does a Coolant Reservoir Last?

coolant reservoir

The coolant reservoir is a tank located in your vehicle that holds the overflowing coolant that comes from your cooling system. The reservoir is a clear plastic container located near the radiator. The cooling system is attached to your engine. This system is made up of tubes and pipes that have coolant running through them. The system works by having a pipe push and pull the coolant through.

The fluid expands as it is subjected to more heat. If the fluid in your cooling system is filled to the top when your engine is cold, it will need somewhere to go when the fluid warms up and expands. The excess coolant goes into the reservoir. Once the engine cools down, the extra coolant flows back into the engine through a vacuum system.

Over time, the coolant reservoir can leak, become worn, and fail because it is used on a regular basis. If the cooling reservoir shows signs of becoming bad, and it is left unattended, the engine can become damaged and complete engine failure is possible. It is best to avoid this by providing the coolant reservoir with regular maintenance. Check your coolant on a regular basis and ensure it is properly filled up. While you are doing this, look for any signs of cracks or broken pieces that indicate the coolant reservoir needs to be replaced.

Since the coolant reservoir does not last the life of your vehicle, there are a few symptoms you should watch for that indicate it is going bad and will need to be replaced soon.

Signs you need to replace your coolant reservoir include:

  • The engine is overheating
  • You notice coolant leaking underneath your vehicle
  • Coolant level keeps dropping on a regular basis
  • The temperature gauge keeps rising near the danger zone
  • Hissing sounds or steam comes from the hood of the engine

The coolant reservoir is an essential part of your vehicle’s cooling system, so it should be in good working condition. As soon as you notice any problems, have the vehicle looked at as soon as possible so as not to cause damage to your engine.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.


More related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
Veteran and Military Driver Laws and Benefits in Idaho
The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the...

Related questions

Q: Engine is leaking coolant on the top of the engine

This sounds like potentially a blown head gasket unfortunately. I would definitely not start or drive the car any longer until having it checked by a mechanic. When this happens, the gasket between the cylinder head and the engine block...

Q: Q: Cooling Fans

Most Vehicles now have 2 separate cooling fans. One cooling fan is intended to come on when the engine reaches a certain temperature. The other cooling fan is intended to come on when the air conditioning is turned on. When...

Q: Van leaking coolant

It sounds like there is a large coolant leak, especially if the system is loosing a considerable amount of coolant. The cooling system will need to be inspected for the source of the leak. Many times the source of the...