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The 2012 Chevy Avalanche with a 5.3-liter V8 engine requires 6 US quarts of 5W-30 oil along with a filter. It is recommended to have oil and filter changes done every 7,500-10,000 miles or 12 months if using fully synthetic oil, and every 3,000-5,000 miles or 6 months with conventional oil. Synthetic oil offers advantages over conventional oil, such as improved lubrication, longer service intervals, and better performance in extreme weather conditions. Thinner synthetic oil flows more easily in cold temperatures, providing enhanced engine protection against friction and corrosion. The cost for an oil change and filter replacement ranges from $140 to $170, including materials and labor.
Your 2012 Chevrolet Avalanche should use 5W-30 oil, and it's important to have it replaced according to the instructions in your car's manual.