Like Hotrod said, pepper is the answer. When you get your rad to a shop and they find Stop Leak in it, you'll take a good cussin'. The pepper however will stop the leak, and if it needs to be flushed out, comes out easily enough. I always carried a large can of the stuff in my sidebox when I was driving OTR with my Kenworth, and it saved my hide more than once.
Tramp
