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In 2007, the Buick LaCrosse requires SAE 5w-30 full synthetic oil. The 3.6l engine holds 5.5 quarts, while the 3.8l engine holds 4.5 quarts. Oil plays a crucial role in keeping your engine well-lubricated, cleaning out impurities like dirt and sludge for smooth performance. An oil change for your LaCrosse typically costs $40 to $50 in labor and $80 to $90 in parts, recommended every 7,500 miles. Signs to watch for indicating the need for an oil change include engine noise, ticking sounds, transmission issues, idle shaking, and decreased fuel efficiency while driving. If you notice smoke instead of regular exhaust or oil leaks where you park, it's time to consider an oil change.
When doing an oil change, it is suggested to use 5.5 quarts of oil for the 3.6 cylinder engine and 4.5 quarts for the 3.8 liter engine. It is recommended to use 5W-30 oil.