It does look like it will be a nasty job. Mostly because the line isn't flexible, so re-routing it will really suq.
The stop-leak is for automatic transmissions. Since the fuild is Mobil 1 ATF, I figured it'd be the stuff to use, only in smaller amounts. I ran about 3 different searches when trying to diagnose this problem, and that 'fix' came up a couple times, so i thought I would give it a whirl. It may yet work, as it takes a while for it to take hold, but I am not really holding my breath, and it seems a chincy way to solve the problem.
