I bought my M5 Touring from a BMW dealer in the UK in February with 2,500 miles on the clock - it came to me in perfect condition with full BMW Approved Used status.
It has now done 5,100 miles. These have been a mixture of in-city and motorway miles.
At around 4,800 miles my Service Due indicator came on and when checking the service warnings it told me that Brake Fluid was needed.
I have not been driving particularly aggressively, especially not on the brakes and have done no track days etc.
1) Is this in any way normal?
2) Can one add one's own brake fluid (I think I know the official answer but just wondering if you can give me any other steer)?
Thanks for any help!