I love my Black Magic fan. I only have to run it if i'm sitting in traffic and not moving air through the radiator. Or 4wheeling because moving slow, but even then it will kick on and off, mostly on. It helps a little bit in the power department/MPG (I emphisize a little) because it don't HAVE to run a fan. My truck stays cool just as long as it's not stopped.

The only downfall to the fan it that it is either on or off. There is no progressive speed in the fan. But that hasn't bothered me. Just something I would like.

But I would deffinetly go with somekind of Electric fan. <img src="/forums/images/graemlins/kewl.gif" alt="" />