S.L. what you are talking about is a two-loop system and that can be beneficial, though probably not necessary for you.
Older car and equipment radiators are copper & brass -ie pre-70's and even some more current ones. They can still be bought new or salvaged (good luck finding a corrosion free one).
edit: changed "all copper" to "copper and brass"
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Last edited by CoolROD; 08-17-2003 at 10:33 PM.
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