Foam in the reservoir?

2007 CHRYSLER 300M

185,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC

SCOTTRWHITE

MEMBER
5 POSTS
FOLLOW

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 2:46 PM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.

JACOBANDNICKOLAS

AUTOMOTIVE REPAIR CONTRIBUTOR
110,190 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 8:26 PM