How often should you change your oil in a 2005 Buick LaCrosse?

For a 2005 Buick Lacrosse, it's generally recommended to change the oil every 5,000 to 7,500 miles, depending on driving conditions and oil type. If you use synthetic oil, you might extend the interval towards the higher end of that range. Additionally, if you frequently drive in harsh conditions, such as stop-and-go traffic or extreme temperatures, you might consider changing it more often. Always refer to the owner's manual for the most accurate guidelines tailored to your specific vehicle.