1994 Cadillac Fleetwood Owner's Manual - Page 281

Adding Coolant Your cooling system when is under a lot of pressure. If the "LOW hot COOLANT" light shouldappear, you need to add coolant. If it doesn't the coolant is at the proper fill level. To Check Coolant When your engine is cold,the coolant level should be atthe base of the filler neck. To Add Coolant If you need more coolant, add the proper m x at thesurge tank, but only i when the engine is cool. 268