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The 2011 Audi A3 TDI comes with a 2.0 liter engine that requires 4.2 US quarts of 5W-30 oil along with a filter. It is recommended to change the oil and filter every 7,500-10,000 miles or 12 months if using full synthetic oil, and every 3,000-5,000 miles or 6 months if using conventional oil. Opting for synthetic oil offers advantages like improved lubrication for moving parts, longer service intervals, and better performance in harsh weather conditions. A thinner viscosity synthetic oil flows more smoothly in cold temperatures, providing effective coverage to engine components and reducing friction and corrosion risks. The cost for an oil change and filter replacement typically ranges from $140 to $160, covering both materials and labor.
The recommended oil viscosity for a 2011 Audi A3 TDI is 5W-30.