Hey Andre, please give us a call so we can provide more information.
The best is the blue coolant Pentofrost NF Coolant/Antifreeze (1.5 Liters) - Pentosin G001100.. its specifically for BMW its around 9.00
You can get Prestone Longer Life 50/50 prediluted Antifreeze coolant. It will work well for your vehicle and has great reviews. Good luck!
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