Join Date: Jul 2007
Location: Anaheim, CA, USA
In case it helps, I bought a Mityvac 4535 and it works well. If you buy one, you will also need a good air compressor. When in use, the air compressor hiss is very loud. In a closed environment, such as a garage, it would be sensible to wear hearing protection.
It has been a long time since a friend and I did a radiator fill, but I remember that we had to pinch a couple of hoses shut during the fill to block air from coming in. We improvised with wood gluing clamps, but it would have been nice to have the proper plugs or clamps. Oh well, next time.