1996 Oldsmobile Achieva Owner's Manual - Page 246

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