Lets save the research time and effort. Buy 1 gallon of BMW concentrated antifreeze and a gallon of distilled water. Mixed them together to make 2 gallons of read-to-use antifreeze. Cost about $26, so $13/gallon. Same price as other pre-mix antifreeze from auto part stores. Why not use the legitimate one that is made for bimmers?
03 DINAN 540iA M-Sport (my DD), 06 DINAN E53 4.8iS (wife's DD), 90 Straman Z32TT (my pride & joy ride)
Gone, but not forgotten: 01 E53 3.0i, 01 525i Sport and 91 Z32TwinTurbo