The oil capacity for an oil and filter change is 4.5qts. If you choose to not change the filter it would only be 4.0qts of oil. qts=quarts.
The Buick needs 5qts of SAE 5W-30.
4.5 quarts of 5W-30
4.8 quarts after a filter change.
Engine crankcase capacity = 3.3 quarts without filter change, 3.7 quarts with filter change
3.0 V6 capacity with filter change is 4.5 quarts. 4 cylinder capacity with filter change is 4.4 quarts.
with filter change engine oil capacity is 5.3 U.S. Quarts with out filter change engine oil capacity is 4.8 U.S. Quarts
4.5 qts. with filter change, 4.2 qts. without filter change.
3 qt. with filter change a little over 2 qt. with out filter change
Capacity with filter change:3.5 litre
The Toyota Rav4 engine oil capacity with filter change is exactly 4.0 quarts. Without the filter change its 3.8 quarts.
always look in your owners manual. but I've driven and maintained a 90 91 93 buick century. if 6 cylinder i would suggest 4.4 litres or oil and change the oil filter at every oil change.
capacity 6 quarts with oil filter change