regular ethylene glycol antifreeze is usually dyed green, yung iba red. orange yung usual dye ng mga long-life coolants. it's probably a bit of a stretch to say that the green stuff will kill a radiator.

ang alam kong maarteng radiator ay yung mga "Dex-Cool" radiators (like in some GM vehicles i think), which are specifically designed for use with dex-cool long-life coolants (orange)... not very sure about that though. pwede rin ata yung green stuff sa mga radiator na to, some people had problems with premature failure of dex-cool 5 yr/100K mile long-life coolants.