[6t8stang]

I find it easiest to access the clutch master cylinder leaning over the driver's side fender, (head almost upside down). I bought the smallest bottle of fluid available (bottle is only about 4" tall). This allows you to reach behind the brake master, unscrew the cap and pour from the little bottle. Careful not to get fluid on any painted surfaces...

I agree your slave is probably leaking. If Wilwood, they sell rebuild kits to replace the seals. Now would be a good time to switch to a high temp fluid and flush the system. You'll probably find the fluid is pretty dark.

Being built in 2002, you may not have a heat shield beneath the two master cylinders - definitely helps having one. Also look at how the hydraulic line is routed from the master to the slave - might be room for heat shielding as well as these are generally close to the headers.