Leaking Clutch fluid

I had the cluth replace 2 years ago, it's worked fine until 6 months ago. Clutch fluid is leaking out, I had my wife push the clutch in, and I was underneath looking in the bell housing. As she pushed the clutch in, fluid squirted out inside. I am not familar with the names of the parts, all I can do is desribe it to you. A spring wrapped around a shaft, it moved as my wife pushed in the clutch pedal, that is where the fluid spewed out. When it first started it wasn't a big deal, but now I have to stop the truck 3-4 times and refill the fluid. That is in the morning, when it's cold. As the day warms up, the truck miraculously stops leaking...until night, then it's back to stop and fill until the truck warms up again. It's as if when the truck is warm, it holds the fluid. I'm unemployed and can't afford to overhaul the clutch again, is there a "quick" fix? Such as them stop leak formulas, yet I haven't seen any for manuel transmissions. If not, I am not a mechanic by any strech of the word, but I have done minor repairs myself as in radiator, starter, alternater, brakes etc. Can you diagnose my problem?

Thanks a million,

Rick Reyes