1996 Cadillac Eldorado Owner's Manual - Page 245

4. With the coolant surge tank pressure cap oft', start the engine and let it run until you can feel the upper radiator hose getting hot. Watch out for the engine fans. 5. Then replace the pressure cap. Be sure the arrows on the pressure cap line up like this. Start the engine and allow it to warm up. If the CHECK COOLANT LEVEL message does not appear on the By thistime,thecoolantlevelinside the coolantDriverInformationCenter,coolant is at the properfill surge tankmay be lower. If thelevel is lower, add level. If a CHECK COOLANT LEVEL message does more of the proper mix tothe coolantsurge tank appear,repcatSteps 1 to 3 orsee yourdealer. until the level reaches about 2.5 inches (60 mm) below the base of the filler neck.