On my Series 2 I seem to be using brake fluid from the rear reservoir. On the Oil Leak this worked out to a consumption of about an ounce per 500 miles.
No evidence of leaks and the vacuum tank has no fluid in it so I suspect it is finding its way into the engine and then out the tailpipes.
My question - what is the likely failure & remedy?
Is it simply a matter of rebuilding the remote servo or is the booster itself to blame?
This is my first car with a brake booster so I have no experience with what can go wrong. Thanks for any advice.