1994 Buick Century Owner's Manual - Page 229

What to Add Refer to the Maintenance Scheduleto determine what kind of fluid to use. See "Recommended Fluids and Lubricants" in the Index. Windshield Washer Fluid To Add a NOTICE: When adding power steering fluid making a or complete fluid change, always use the proper fluid. Failureto use the proper fluidcan cause leaks and damage hoses and seals. The windshield washer reservoir is located on the passenger's side of the engine compartment. The wagon rear washer fluid comes from the windshield washer reservoir. 227