As long as you use the right coolant and maintain it regularly, IMO, for heavy duty trucks, copper-brass (tanks) on copper-brass (tubes) on copper (fins) win, hands down, every time. They are heavier, generally repairable, more expensive, (than aluminum) and getting harder to find. (and no, I'm not dissing aluminum radiators)
If you're worried about the warranty, IMO, you are buying the wrong product. IMO, a well built brass radiator, well maintained, has a life span measured in decades. If you want to low ball the price, then you NEED a good warranty and roadside assistance!
Chum lee
