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The oil filter wrench size for the 2011 Buick Regal is between 3/8" to 4-1/4". Quality oil is crucial for the engine's smooth operation, as using bad oil can lead to engine failure. One common indicator of an issue is a foul burning smell, which should be addressed promptly to prevent potential hazards like the car exploding. Engine knocking noises and reduced gas mileage may also occur when there are oil-related problems. It is recommended to change the oil every 5,000 to 10,000 miles to maintain engine health and prevent future issues.
The oil filter wrench size for the 2011 Buick Regal is 13/16 of an inch.