It originally used dex-cool from the factory.
134a
Water
Water
dex-cool coolant---it is orange in color.
ORANGE is factory.
Dexcool. ORANGE color.
Used coolant should be properly recycled.
The type of coolant recommended for a 2003 BMW 525i is Glysantin G48. You can purchase this at an auto parts store or a BMW dealership.
The factory coolant is a red, five year, HOAT type coolant.
Type of coolant Citroen Xsara 2
regular "green" coolant
Dex cool coolant.