Big mystery where this coolant is going?

Tiny
ANDREW197526
  • MEMBER
  • 2002 CHRYSLER SEBRING
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 148,000 MILES
Several months ago I noticed when driving low speeds my car heater would just blow out cold air.I added coolant and the problem was corrected for about a month then the coolant level went down again.I had a mechanic check it for any leaks. He found no visible leaks-he checked the exhaust and the oil for signs of coolant and there was none. It's a big mystery where this coolant is going any help would be appreciated. Thanks Andrew
Sunday, March 15th, 2009 AT 5:16 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

You might want to check your radiator cap.
Get it pressure tested and make sure it is performing at the correct pressure.
If the cap is not performing correctly it can release coolant thru the overflow. Which will typically drain to the ground and might not be noticeable as it will do that while you are driving.
The cap should be at 14 PSI.

Here is a helpful article:

https://www.2carpros.com/articles/radiator-pressure-test

https://youtu.be/W8kra65m15c

Please let me know of any questions.

Thank you.
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Monday, August 9th, 2021 AT 6:48 AM

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