How do i add oil to my 95 Cavalier clutch?

The clutch on my 1995 Chevrolet Cavalier 2 Door Sedan engages very near the floor. It was corrected before by adding some kind of oil. Where do i add this oil and what kind of oil is it?
David, June 2005


done
The clutch resoivor is on the firewall just like the brake resoiver ....it will take brake fluid .......

bg, November 2005
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