1996 Cadillac Eldorado Owner's Manual - Page 281

Adding Coolant If you need more coolant, add the proper mix at the surge tank, but only when the engine is cool. I Surge Tank Pressure Cap 1 NOTICE: The surge tank cap a 15 psi (105 kPaj is pressure-type cap and must be tightly installed to prevent coolant loss and possible engine damage on from overheating.Be sure the arrows the cap line up. If the surge tank pressure cap needs to be replaced, a General Motors cap is recommended. You can be burnedif you spill coolant on hot engine parts. Coolant contains ethylene glycol, and itwill burn if the engine parts are hot enough. Don't spill coolant ona hot engine. ~ ~~ When replacing the pressure cap, make sure it is tight. 6-22