What causes antifreeze to come out the overflow?

when your engine is hot it causes the water to boil and the water and the anti freeze will come out of the overflow pipe.
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What would cause antifreeze to boil in overflow tank in 2003 Chevy Venture happened twice now and neither time has the temperature gone up to the red area and engine overheating light hasn't come on?

  Answer     Replace the radiator cap with the proper OEM cap. Be sure and use the exact same pressure cap. If this happens again after replacing the cap, then y (MORE)

What causes a car to lose antifreeze?

You either have a leak or your engine is using antifreeze. If your engine is using antifreeze, it will usually be caused by a leaking head gasket, cracked head or block. If yo (MORE)

Will filling up overflow tank on Honda crv with antifreeze be okay?

Uncertain what is being asked. Yes, you can add anti-freeze to the cooling system in this manner, but not to add any more than just a small amount. If you need to introduce e (MORE)

Would old antifreeze cause check engine light to come on?

No.The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the (MORE)