2003 Cadillac Seville Owner's Manual - Page 276

Use a mixture of one-haif clean, drinkable water and one-half DEX-COOL@ coolant which won't damage aluminum parts. If you use this coolant mixture, you don't need to add anvthir- else. !f v n n n Iacn a n i m nr r mrm t-Oelana mixture nar w e b m m m m m v r your engine could overheat 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 other parts. .IVL#VII A fr . hi a JVW UII Y If you have to add coolant more than four times a year, have your dealer check your cooling system. Addin-mly p n water to yo1 cooling system can be dangerous. Plain water, or some other liquid such as alcohol, can boil before the proper coolant mixture will. Your vehicle's coolant warning system is set for the proper coolant mixture. With plain water or the wrong mixture, your engine could get too hot but you wouldn't get the overheat warning. Your engine could catch fire and you or others could be burned. Use a 50/50 mixture o clean, f drlnk2h!LI ?n?l,er 2nd DEX-CQQP ccc!an!. Notice: If you use the proper coolant, you don't have to add extra inhibitors or additives which claim to improve the system. These can be harmful. 5-27