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Old 07-06-2007, 01:20 PM   #1
grayw0lf
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Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
How to deep clean a rusty radiator?

Does anyone know of a good method to clean out a rusty radiator? It doesn't leak at all, but you can see the rust clogging up the end of the cores.

I've been through 2 bottles of Prestone Heavy Duty Radiator Cleaner & flushed it several times. Its much better, but still not cooling properly at highway speeds.

I'm thinking muriatic acid or naval jelly in the radiator might be a step too far.
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85' CUCV M1009!!! The newest addition!
6.2diesel, Th400, NP208, & only 36k miles!
70' C-10 LWB Fleetside - Looking good these days!
05' Dodge Neon
88' Winner Escape Sport 1750 - 4.3v6
94' Seadoo SP
84' Honda TRX200, bare nekkid. Just a frame & tires.

Always looking for another project or any good deal!

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