Long story short, transmission rebuilt last fall by shop, likely cause of trans failure was water in fluid. So shop replaced radiator thinking water was coming from there. Now more water in fluid again, this time lots, fluid is pink and milky, last time was just trace water in fluid. So where else can water be coming from? Transmission dipstick, but where else?. Old radiator was never pressure tested to confirm leak. Now I'm having Transmission shop test current radiator for leak, and check everything else, but at the same time I'm going to check things too. I really don't want to rebuild this transmission again!