All,
The ol' 2cv van's been sat in the garden for a couple of years, after the engine decided to throw some toys out of the pram.
That's playing again, but the contents of the brake master cylinder look... interesting.
Normal DOT3 fluid new three and a bit years ago, together with four new wheel cylinders and a new master cylinder. The fluid wasn't bright purple at that point. It is now. A really violent brush cleaner/meths purple.
Thoughts?