1995 Buick Century Owner's Manual - Page 182
1995 Buick Century Manual
Page 182 highlights
2.2L L4 Engine 3100 EngiIle The coolant level should be at the FULL HOT mark. If it isn't, you may have a leak in the radiator hoses, heater hoses, radiator, water pump or somewhere else in the cooling system. 5-16