Reply 20 of 34, by Jade Falcon
Only reason anything should corrode is because you ether used hard water or mixed metals.
Keep in mind most cheaper rads are not made of copper, but brass.some fittings are not made of the metals the manufacturing states there made off too. For instance cheaper fitting may be made of a chrome plated metal thats more like pop metal. That would be ok, but the inside part of the fitting is often not chrome plated.