It is not necessary to regularly check clutch fluid unless you suspect there is a leak in the system. Adding fluid won't correct a leak.
A fluid loss in this system could indicate a problem Have the system inspected and repaired.
The hydraulic clutch fluid reservoir is located behind the front panel on the driver's side of the vehicle.
Refer to the maintenance schedule to determine how often you should check the fluid level in your clutch master cylinder reservoir and for the proper fluid. See "Owner Checks and Services" and "Recommended Fluids and Lubricants" in the Index.
The proper fluid should be added if the fluid level is not between the MAX and MIN marks.