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The Terminator
Terminator Talk
What's this inside my radiator?
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<blockquote data-quote="SnakeBitten07" data-source="post: 15308821" data-attributes="member: 167815"><p>I happen to have first hand knowledge of this. The coating is aluminum oxide - caused by the chemical interaction of the coolant with the aluminum of the radiator. One or two elements in the aluminum alloy is high enough to cause the reaction (I cannot recall what elements for the life of me, I have the information at work) - this is why you don't see it in the heads or anywhere else. Is the water pump body clean of the oxide as well? What coolant are you using, and have you run any additives in the system?</p><p></p><p>Rest assured, the oxide is harmless.</p></blockquote><p></p>
[QUOTE="SnakeBitten07, post: 15308821, member: 167815"] I happen to have first hand knowledge of this. The coating is aluminum oxide - caused by the chemical interaction of the coolant with the aluminum of the radiator. One or two elements in the aluminum alloy is high enough to cause the reaction (I cannot recall what elements for the life of me, I have the information at work) - this is why you don't see it in the heads or anywhere else. Is the water pump body clean of the oxide as well? What coolant are you using, and have you run any additives in the system? Rest assured, the oxide is harmless. [/QUOTE]
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What's this inside my radiator?
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