I have had a weird deal going on the past 2 days in my 85 Toyota. I've started getting less and less clutch pressure every time I get in the truck. The clutch isn't grabbing near the top like before. The clutch is only a year old Centerforce unit. I checked the reservoir and the fluid is still full but kinda dark. The only thing else I can figure is the slave is going bad. Think so? I also thought maybe there was some water in the fluid b/c it's been like 6 degrees here for a couple of days and maybe there's some freezing of the fluid? Any way to check the slave cylinder? I did a search and didn't find anything. Thanks!