For those of you who have responded to my problem, please let me thank you.....
Here's the latest:
I had a good conversation with the lead tech at Lexus here and reviewed what I had found. he told me that this vehicle not only has a small External Cooler in the right well area, but it indeed also connects into an additional cooler insdie the radiator. The worst of both in my opinion, only for the fact that they use all the same color fluids!. If it was the transmission fluid mixing with the coolant, he felt it would be a continuos process. But at this point since my servicer cleaned out the Radiator Overflow Bottle, no evidence of "Co-Mingling" has resurfaced. I then went back to my servicer to check the progress after driving for several days, and as I said, no more evidence of contamination. The mechanic feels strongly it is Brake Fluid after examining it. It would make sense if the "E-Z Lube" center did as we now believe inadvertenly pour it in the wrong adjacent bottle (Even though the paperwork from them indicates NO Filling of this Fluis (or any others)...... Even I find this difficult to fathom, and am torn about taking it to court or the BBB..... It's not exactly a proveable claim..... but as they say "A Preponderance of the Evidence"...... The only thing I haven't done, but really don't want to do unless required is have a radiator shop pressure test the Trani Coolant lines into the radiator to eliminate any theories that its an intemittent leak. None of the servicers I spoke with suggested this... it was my idea but don't you think I would have to do this to disprove E-Z Lubes claim that this was the cause?