1998 Buick Riviera Owner's Manual

NOTICE:Checking CoolantIf you use an improper coolant mixture, yourengine could overheat and be badly damaged.The repair cost wouldn't be covered by yourwarranty. Too much water in the mixture canfreeze and crack thengine, radiator, heater coreand other parts.If you have to add coolant more than four times a year,have your dealer check your cooling system.1 NOTICE:If you use the proper coolant, you don't have toadd extra inhibitors or additives which claim toimprove the system. These can be harmful.The engine coolant recovery tank is located on thedriver's side of the engine compartment.When your engine is cold, the coolant level should beat FULL COLD or a little higher. When your engineis warm, the level should be up FiLJLL to HOT or alittle higher.6-22