[kissthebricksdad]

FWIW, BMW anti-freeze/coolant is phosphate free. Phosphates cause aluminum oxidation, which over time blocks cylinder head coolant passages and can cause head gasket failure on BMW engines. Phosphates can also cause aluminum oxidation inside a thermostat housing which can eventually over the longer term make the thermostat not function properly. Said again, these things happen over long intervals. If you don't keep a car long, you may never see it. But if you plan on keeping a car "forever," or if you are going to buy an older car whose maintenance history you are unsure of, long-term effects may matter. It's the container saying what chemicals are in the mix that matters to me, not what color it is.
KTBD