What's the what type of oil for 2004 buick lesabre?

The recommended oil type on the 2004 Buick LeSabre iS5W-30 for all temperatures. If You live in an area where it is 0F and above, then You would need to use 10W-30. Now that You know what type of oil to use, You might want to know about Your vehicle's oil capacity. The oil capacity on this Lesabre happens to be 4.5 US quarts with a filter. It is of utmost importance that every time You change Your oil, You change the oil filter as well. It's not a good idea to change the oil and leave the old oil filter installed on the car. Don't mix the old oils with the new oils and You'll be good to go.