How many years/miles had it taken to become discoloured and contaminated?When I had my fluid changed at AM last month, the chap showed me the dark, discoloured fluid in the reservoir, which he said was contamination and was not a good sign.
He suggested having the fluid changed yearly should help offset any future problems with it.
I'm not sure how the fluid becomes contaminated as I assumed it was a sealed system. Unless, of course it is the seals on the master or slave cylinders causing the problem.
As to any difference since I had it done, non at all, other than me being acutely aware of the slight clunk each time a gear is selected.