LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Weird stuff in coolant

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Old Sep 22, 2020 | 10:02 PM
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Default Weird stuff in coolant

Found this black chippy stuff in coolant after analyzing everything from a bipolar running hot one day and running middle mark the next day issue.

blead system
no leaks
fans work
No debrees blocking radiator.

cools fine on highway.

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Old Sep 23, 2020 | 08:51 AM
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that coolant looks pretty "milky"....possible bad head gasket or pin hole/crack in head
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Old Sep 23, 2020 | 09:56 AM
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From: Jackstandican
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That pic taken under UV light? If not, that coolant indeed looks like the coffee I'm drinking right now.... :\
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Old Sep 23, 2020 | 02:03 PM
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Originally Posted by SS RRR
That pic taken under UV light? If not, that coolant indeed looks like the coffee I'm drinking right now.... :\
yes that’s a UV light so I can spot out the black specs. And I doubt it’s a serious issue. Car is well maintained. It’s something little I’m missing but you never know.
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Old Sep 23, 2020 | 05:29 PM
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From: Jackstandican
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possibly the rubber seal around the radiator cap? Take a look at it and see if it's dried out.
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