I have a 1997 Mazda Midge. A few days after it was serviced, I'm having the following problem:
* drive about 10km, and it's becoming more and more difficult to change gears, until eventually I can't change at all while driving;
* I can change gears when I stop.
* I stop for about an hour and a half
* what I think is the brake-fluid / clutch-fluid reservoir is filled past max, so I empty some of the fluid out.
* I can then change gears normally, but after another few km I absolutely can't, and have to call a tow-truck.

Any ideas?
Thanks - Claire

 

Check the master & slave cylinders for leaks, peel back the rubber boot as well.

Also going by age its possible the internal seals in either the master or slave are worn & bypassing.

 

Thanks very much!