Approximately 4.5 quarts of oil are required for a full oil change on the 2009 Buick LaCrosse’s 3.8L V6 engine, including a new filter. Some models or markets with different engines have different capacities, so verify with your manual.
The 2009 LaCrosse lineup largely used the 3.8-liter V6, and precise oil capacity can vary by engine variant or options. If your car has a different engine, the capacity will differ; consult the owner's manual or GM's service data for your exact trim.
Engine options and oil capacity
To give a clear figure for the majority of 2009 Lacrosse cars, the following capacity applies to the common engine in that year:
- 3.8L V6 (3800 Series II): 4.5 quarts with filter
After performing an oil change, recheck the dipstick and top off if necessary to reach the full mark.
Summary
For most 2009 Buick LaCrosse models powered by the 3.8L V6, the oil capacity is about 4.5 quarts with a new filter. Always confirm with your vehicle's manual in case of trim-specific variations.