Foam in the reservoir?

2007 CHRYSLER 300M
185,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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SCOTTRWHITE
  • MEMBER
  • 5 POSTS
There is so much foam in the reservoir. It looks like it came from root beer. Nothing but antifreeze has been added to the reservoir. does not look like oil because it's pure white and there is no white smoke from exhaust. What could it be? We used orange antifreeze.
Jan 30, 2024 at 6:46 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi,

If a cylinder head gasket fails, it can cause compressed air to enter the cooling system. That will cause foam or bubbles.

Do me a favor. Take a look through this and let me know if you see something that mirrors what you are seeing. Also, check the transmission fluid to make sure the coolant isn't mixing with it.

https://www.2carpros.com/articles/head-gasket-blown-test

Let me know.

Take care,

Joe
Jan 30, 2024 at 12:26 PM
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