It's "weatherstrip adhesive", and it's good stuff. I use it on the front and rear seal strips under the intake mani on SBC's, a known problem location, and it works like gangbusters.

The problem with rtv and antifreeze is that it won't stick to a surface wetted with the rtv. It's fine after it dries, unless you gob it on so it gets pooched out of the gasket clamp area into passages. That stuff should never be put on in a bead with a gasket, but put on with a finger to smear it into a thin layer. If you have to close a large gap, do the mechanical repair to eliminate the gap, then use the rtv.

There are places to use rtv, places to use weatherstrip adhesive, and places to use gasket adhesive. Personally, I'd use rtv on the 3.0 water pump, since the front and rear halves come from different places, are made of differing materials, and mount to a potentially uneven surface.

And Justice, you came over as kind of rude and smartass, whether you meant it that way or not. I recognized it because that mode comes natural to me, too, you see...

One last tip. The dside cam sprocket wants to stay on the timing mark because the cam is between lobes. The pside is on the point of a lobe, and wants to jump off, so be gentle...