Busted fan and radiator, why did this happen?

[Dino]

im wondering how i can tell if i have an aluminum or stainless one? is there an easy way to tell?  id hate to replace it if the blades on mine are stainless.   also any fan can have a clutch on it correct?

Should be plain steel, I doubt it's stainless.  Stick a magnet on it, if it falls off it's aluminum.  I would assume you can bolt most if not all fans to a clutch but I know some fans are labeled for use specifically with or without clutch.

[Brightyellow69rtse]

its very shiny and has been for prolly 13 years. so even if it wasnt magnetic it could still be stainless. ill have to investigate a little.