1994 Cadillac Seville Owner's Manual - Page 243

3. Fill the coolant surge tank with the proper m x up to i, the base of the filler neck. 4. With the coolant surge tank pressure cap off, start the engine and let it run until you canfeel the upper radiator hose gettinghot. Watch out for the engine fans. I By this time, the coolant level inside coolant surge tank the may be lower. If the level is lower, addmore of the propermix to thecoolant surgetank until the level reachesthe base of the filler neck. 230