flushed fluids @ 50k miles noticed then clutch fluid was low. now 4 months and 7k miles later fluid is at bottom of sight window again. I can't see any leaks around master cylinder. could the fluid be leaking into the crankcase and mixing with oil or is the slave separated from the oil?
If your oil seal is shot, then yes. Rebuild your slave cylinder and just to be safe, change your oil.