So I'm driving to work this morning and I notice steam coming from under the hood. Good thing I was a block away. Opened the hood, lot's of steam. Went back out to fill the tank with water to get it home and work on it. When I poured the water in you could hear the sucking sound as the dry cooling system drank deeply. I looked over to the firewall and it looked like someone had opened an artery. Green "blood" squirting everywhere.

The questionn is: how hard is this to do? Should I let my mechanic have it or tackle it myself?

Will spend the time if it is relatively easy.