Spencer Yost wrote: > Sorry to reply to my own post, but I forgot to ask: what is the oil > in the refrigerant? I'd like to know what that is. I think that would > make a very good penetrant. That stuff is _slick_. > > > > Spencer Yost > Most automotive use is PAG 46 AKA Polyalkylene Glycol Viscosity 46 SLIPPERY stuff. It's available in a few viscosities. -- Steve W.