How much oil does a 3.3L V6 89 Buick Century take?

A 1989 Buick Century with a 3.3L V6 engine typically takes 4.5 to 5 quarts of oil. However, always check your owner's manual for the exact specification. The amount might vary slightly depending on the specific model and whether an oil filter change is also being performed (a new filter will slightly increase the amount of oil needed).