1997 Pontiac Grand Am Owner's Manual - Page 253

NOTICE: If you use an improper coolant mix, your engine could overheat and be badly damaged. The repair cost wouldn't be covered by your warranty. Too much water in the can freeze mix and crack the engine, radiator, heater core and other parts. If you have to add coolant more than four times a year, have your dealer check your cooling system. Checking Coolant I NOTICE: ~ ~~ If you use the proper coolant, you don't have to add extra inhibitors or additives which claim to improve the system. These can be harmful. The coolant surge tank is located on the passenger's side of the engine compartment. 6-26