1998 Chevrolet Corvette Owner's Manual - Page 269

NOTICE: If you usean improper coolant mixture, your engine couldoverheat and be badly damaged. The repair cost wouldn't be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core and otherparts. Checking Coolant If you have to add coolant more than four times a year, have your dealer check your cooling system. NOTICE: If you usethe proper coolant, you don't haveto add extrainhibitors or additives which claim to improve the system. Thesecan be harmful. The coolant surge tank in the engine compartment is behind the headlamp.