Hmmmm.Glad you took my advice on this one. Fair warning, that little $14 venturi vacuum pump needs a bitching air compressor to run it. They work every bit as well as the electric driven ones though. I like to suck down my AC systems for at least 30 minutes to boil off any possible moisture in the system. I have a 6hp 60 gallon that runs continuously to get the job done. I assumed given the amount of car work you do, that you probably have a very decent air compressor. I replaced both HVACs on my house as well, and sucked them down with that same stupid little $14 pump. Worked perfect, and the AC in my house blows ice cold as well.
Let me check.
I think I'll be OK...just gonna have to run a bit.