Old BMW- red brake fluid

[HustleRussell]

Odd. I noticed the other day that the brake fluid in the reservoir is red. The brake fluid that came out when I disconnected the rear brake hoses was the correct piss colour.

I didn't investigate any further, but I'd just assumed that BMW made special red fluid for some reason- seems like the kind of thing they'd do what with their unusually blue coolant.

Now I'm thinking that some moron has topped it up with ATF and I, also a moron, have failed to ever replace the fluid in my just over three year ownership (I'm usually pretty keen with brake fluid changes)