2009 Chevrolet Corvette Owner's Manual - Page 308

When to Check and What to Use The hydraulic clutch fluid reservoir cap has this symbol on it. See Engine Compartment Overview on page 5-14 for reservoir location. Cooling System (Engine) The cooling system allows the engine to maintain the correct working temperature. Refer to the Maintenance Schedule for the proper fluid to use. See Recommended Fluids and Lubricants on page 6-12. The fluid requires changing every two years. See Additional Required Services on page 6-6. How to Check and Add Fluid Visually check the clutch fluid reservoir to make sure the fluid level is at the MIN (minimum) line on the side of the reservoir. The hydraulic clutch fluid system should be closed and sealed. Do not remove the cap to check the fluid level or to top-off the fluid level. Remove the cap only when necessary to add the proper fluid until the level reaches the MIN line. 7.0L Engine shown, 6.2L Engine similar A. Electric Engine Cooling Fan B. Coolant Surge Tank with Pressure Cap 5-32