1996 Pontiac Firebird Owner's Manual - Page 266

Hydraulic Clutch The hydraulic clutch linkage in your vehicle is self-adjusting. The clutch master cylinder reservoir is filled with'hydraulic clutch fluid. It isn't a good idea to "top off' your clutch fluid. Adding fluid won't correct a leak. When to Check and What'toUse A fluid loss in this system could indicate a problem. Have the system inspected and repaired. ' ) : - Refer to the Maintenance Schedule to determine how often you should check the fluid levelin your clutch master cylinder reservoir and forthe proper fluid. See "Owner Checks and Services" and "Recommended Fluids and Lubricants" in the Index. How to Check The proper fluid should be added if the level is below the STEP mark on the reservoir. See the instructions on the reservoir cap.