2003 Cadillac Seville Owner's Manual - Page 283

How to Add Coolant to the Coolant Surge Tank If you haven't found a problem yet, check to see if coolant is visible in the surge tank. If coolant is visible but the coolant level isn't at or above the fill mark at the forward edge of the surge tank, add a 50/50 mixture of clean, drinkable water and DEX-COOL@ coolant at the coolant surge tank, but be sure the cooling system, including the coolant surge tank pressure cap, is cool before you do it. See Engine Coolant on page 5-26 for more information. If no coolant is visible in the surge tank, add coolant as follows: can come out at highspeed. Never turn the cap when the cooling system, including the coolant surge tank pressure cap, is hot. Wait for the cooling system and coolant surge tank pressure cap to cool if you ever have to turn the pressure cap. Steam and scalding liquids from a hot cooling system can blow out and burn you badly. They are under pressure, and if you turn the coolant surge tank pressure cap even a little-- they -- CAUTION: (Continued) 5-34