1995 Chevrolet Lumina Owner's Manual - Page 221

When the engine compartment is hot, the level should be at the H mark. When it'scold, the level should be at the C mark. If the fluid is at the ADD mark,you should add fluid. What to Add Refer to the Maintenance Scheduleto determine what kind of fluid to use.See "Recommended Fluids and Lubricants" in the Index. NOTICE: When adding power steering fluid or making a complete fluid change, always use the proper fluid. Failureto use the proper fluid can cause leaks and damage hoses and seals. A fluid loss in this system could indicate a problem. Have the system inspected and repaired. 6-23