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Re: Coolant is brown and has sludge in it.
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Originally Posted by sykopenguin
I have a 1994 S-10 Chevy Blazer and my coolant under the radiator cap is brown and has brown sludge in it. A mechanic told me I possibly have rust in my radiator causing this. Also my coolant goes very quick...meaning I have to add more like every 2 weeks. If you need more info lemme know. Thanks
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Go get your cooling system flushed and refilled and make sure they reverse flush the heater core.
Then replace the rad cap with something NOT Ac delco.
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1995 Factory Blazer Service Manual for sale, PM if interested.
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