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Re: GM LS1 Engine
Posted to Technical Discussion Forum on 10/27/2023 6 Replies

Wasn't there problems with Dex-cool when it mixed with air [from a faulty cap, or overflow empty] that would result in brown sludge and acid build -up?

Check GM service bulletin- 99-06-02-012D. It's for a Blazer, they had problems with radiator caps leaking,... Login to read more.

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