Guys, Went to dealership to pick up my gallon of yellow and they gave me blue. He then showed me a bulletin released by Mercedes saying that they were phasing the yellow stuff out and this was the new phosphate free coolant and it is compatible with yellow. I said no thanks and went to get a gallon 0f G-05. Right now, I want it one color. Maybe next flush, switch to blue. I know when I had my old 95 E34 BMW, the BMW blue stuff was great and used it all the time. Oh well, just an update. Thoughts?