1996 Cadillac DeVille Owner's Manual - Page 243

I NOTICE: Engine damageif you keep running your engine without coolant isn't covered by your warranty. See "Overheated Engine Protection Operating Mode" in the Index. How to Add Coolant to the Coolant Surge Tank If you haven? found a problem yet, but the coolant level isn't atthe proper level(2.5 inches (60 mm) below the a base of the fill neck), add 50/50 mixture of clean water (preferably distilled) and DEX-COOL antifreeze atthe coolant surge tank, but be sure the the cooling system, including coolant surge tank If there seems tobe no leak, withthe engine on, check to pressure cap, is cool before you do it. (See "Engine see if the electric engine fans are running. If the engine Coolant" in the Index for more information.) be is overheating, both fans should running. If they aren't, your vehicle needs service. TM IA CAUTION: Steam and scalding liquidsfrom a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the coolantsurge tank pressure cap even a little they can come out at high speed. Never turn the cap when the cooling system, including coolant surge tank the s pressure cap,i hot. Wait for the cooling system and coolantsurge tank pressure cap to cool if you ever have to turn the pressure cap. -- -- 5-20