Black antifreeze

2003 CHEVROLET CAVALIER
150,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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ALBERT396
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  • 1 POST
The antifreeze is almost black and so is the reservoir. The radiator cap has a film of white mucus and the car temperature goes past the middle point.
Jul 18, 2018 at 5:18 PM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Hi and thanks for using 2CarPros.com.

Based on your description, it sounds like you have a bad head gasket which is allowing oil to get into the cooling system. Take a look at this link which describes how to check.

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

Let me know what you find or if you have other questions.

Take care,
Joe
Jul 19, 2018 at 7:32 PM