-Or so I was told.. -not that I know a way to test that..
aluminum isn't neceserely better than brass/copper, but it sure is lighter..
-replacing with, say 4 core center will work for you..
Maybe waterpump needs an overhaul..
This is from Primedias homepage: luminum vs. Copper-Brass
"Many new performance radiators, such as those from Griffin and Be Cool, are made from aluminum that offers weight savings over copper-brass. While aluminum does not dissipate heat as well as copper-brass, modern radiator design more than makes up for the difference. Old copper-brass radiators were soldered together, but solder is a poor thermal conductor and this reduced the ability of the fins to remove heat from the tubes. "
