2009 Chevrolet Corvette Owner's Manual - Page 310

Checking Coolant 3. Loosen, but do not completely unscrew the bleeder valve to check for coolant in the system. 4. Tighten the bleeder valve if there is coolant flowing out of the bleeder valve. 5. If there is no coolant flowing out of the bleeder valve, there could be a leak in the system. Tighten the bleeder valve and contact your dealer/retailer for service. Engine Coolant The cooling system in the vehicle is filled with DEX-COOL® engine coolant. This coolant is designed to remain in the vehicle for five years or 150,000 miles (240 000 km), whichever occurs first. 1. Verify that the engine and intercooler are no longer hot. 2. Place a cloth to absorb possible coolant loss under the driver's side bleeder valve (A). The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating, see Engine Overheating on page 5-39. 5-34