1993 Cadillac Eldorado Owner's Manual - Page 296

Adding Coolant 4.6 Liter (Northstar) TCI Check Coolant (4.6L Northstar): When your engine is cold, the coolantlevel should be at "FULL COLD", or a little higher. When your engine is warm and the "ENGINE COOLANT LOW" the is message does not appear on Driver Information Center, coolant at the properfill level. To Check Coolant: When your engine is cold, the coolantlevel should be at "FULL COLD," ora little higher. Whenyour engine is warm, the level should be up to "FULL HOT," or a little higher. To Add Coolant 4.9L: If you need more coolant,add the proper mix the coolantrecoverv tank. 282