I not to long ago started leaking clutch fluid before i put my truck in the body shop as i have just gotten it back i filled up the clutch fluid and it seemed to stay but as i later tried to drive my clutch wasnt engaging so i couldnt even get into a gear without nothing but grinding. Just want to know what exactly would be the cause of this...planning on bleeding the cutch next free time i have to see what that does but dont know if thats not even it.
you can pick up a slave cyl. rebuild kit for like $10 from autozone or another parts place, flush out all the old fluid, and put the rebuild kit in, and new fluid. the fluid is the same as brake fluid, it will break down over time, when you put the new fluid in, it probably broke some debris loose, and clogged the line.....
hope that helps, if not you may have to replace the clutch master cyl....keep us posted