Chevrolet 2004 Corvette Owner's Manual page 267

CAUTION:
{
Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark. The FULL COLD mark is on the front
of the coolant surge tank. Do not overfill the surge tank.
Too much coolant can result in an overflow when the
fluid is hot.
Adding Coolant
If you need more coolant, add the proper DEX-COOL
coolant mixture at the surge tank, but only when the
engine is cool.
CAUTION:
{
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Do not spill coolant on a hot engine.
When replacing the pressure cap, make sure it is
hand-tight.
®
5-25