Toyota Corolla

Ok I Have a 1985 Toyota Corolla SR5 4ac engine.
Ok about a week ago the clutch was working great. Then a couple days ago I noticed that the clutch engages when I press really low to the floor. No pressure till its almost on the floor.
I called up my friend and he told me to add tranny fluid 75-90wt. I then opened (per his instructions) up the shiftknob area and noticed that the fluid was pretty low. It took 1 whole bottle to fill it up. I then tried and drove it and noticed it was pretty much the same. At times when I get to a stop I can't even shift it to first. Then I turn off the engine pump it (clutch)about 20 times and notice a little difference. But then it gets loose again towards the floor. Let me know what you guys think. I really need to get this fixed. Im thinking I need to replace the slave cylinder as well or do you think I need to bleed it? How do I bleed it correctly?
April 8, 2006.

A clutch and slave cyl takes hydraulic Brake fluid not tranny fluid. You will have to replace both clutch and salve cyl and make sure you flush the lines. Good luck

Apr 11, 2006.