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The 2005 Buick LaCrosse uses dex-cool extended life 50/50 antifreeze. Common engine issues include a spark plug coming loose, a loose gasket needing tightening, oil leaks that should be promptly fixed, and the critical problem of engine overheating, which can lead to fires and potentially the car exploding. Excessive oil use may require more frequent oil changes. It is recommended to change the coolant every 60,000 miles, the air filter every 15,000 to 30,000 miles, and the spark plugs every 100,000 miles, unless using copper plugs, which should be changed every 30,000 miles.
You have the option to utilize prestone dex-cool extended life 50/50 antifreeze and coolant for the 2005 buick lacrosse.