If it was empty, it's going to take more than one can to fill it. However, I think you made the right decision when you decided to take it to a professional. If it's leaking, it's going to be very difficult to find it and fix it yourself. I fix most things myself on my vehicles, but I just took my Chevy truck to a mechanic for A/C repair. It's too easy to go wrong if you don't really know what's going on.

95 Contour Zetec, ATX (wrecked, sitting in the barn) 95 Mystique Zetec, MTX 2000 Taurus SEL 3.0L Duratec 1994 Crown Victoria LX 4.6 V8 1993 Chevy Silverado 4.3 V6