When the person use the evacuation stuff they blew out a bunch of oil this green stuff replacing the needle so that's why it ended up getting oil in it.
So I'm gripping the heater core line in order to restrict the flow so it's not introducing the heat into the system I gather.
I hope I didn't use the word Freon but I suspect I probably did I do know the difference but it sure was easier to say than r134a LOL.
In the short term I'm going to try to do some of the methods described in a couple of posts and then I think eventually I'm going to evacuate it and do a vacuum test etc.. if I can find a shop that will actually do it that would be fine.
Thanks for the information Doug