The fan cycles on and off as it should. It can sit in my driveway and idle all day and never boil over. Until I shut it off, then coolant level rises up the reservoir and out the puke hole, due to no pressure keeping the boiling point at bay.
I can squeeze both upper/lower hoses while running, after a hard drive, after climbing a hill, etc., and hoses will remain soft. It will not overheat while running.
I already verified t stat opening/closing as it should.
I have not performed a cooling system pressure test. I haven't brought myself to pay for the adapter I need.
That is the only thing left to test, so I suppose I'll get it ordered, perform the test and report back.