E60 M5 and E61 M5 Touring Discussion
I'm looking to do a flush and fill on my cooling system but haven't been able to find a DYI on the board. Is it really as simple as draining the radiator and refilling with a 50/50 mix of distilled water and BMW coolant?
I've found DYI's for other model BMWs where there is a plug in the block...