Every 2-3 weeks I have to bleed my clutch. The fluid dissapears and it just stops shifting. When I fill it up, it still won't shift until I bleed it. Any ideas what can cause this? I can't see a drop of fluid on the pavement where I park everyday.

 

If your master and slave cylinders are original, it's been long enough to consider the possibility that the inner seals/liners have broken down to some extent. New cylinders run around $20 each last I checked.
Before you bleed, how much fluid does it look like you've lost in the reservoir? Or are you having to add afterwards mostly because you bled the system? It only takes little air to kill your pressure, so perhaps only a few drops have seeped and traded places with a little air right at the piston seal.

 

They are original. I would fill it up to max, bleed, refil to max what has left then drive for 2 days and the reservoir is down to min... I can't find anyplace that its leaking at. I pressure washed my motor today top and under, going to see the new grease that builds up from leaks and find out where it's coming from.