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The 2005 Chevrolet Impala requires around 5 liters (equivalent to 5.28 quarts) of SAE 5W-30 synthetic oil. This oil is specially formulated to last longer, reducing the need for frequent maintenance appointments. It enhances performance and fuel efficiency, while also keeping the engine well-lubricated and cool to prevent corrosion. Chevrolet suggests changing the oil in the Impala every 7,500 miles or 6 months, whichever occurs first. If you frequently drive long distances at low speeds or reside on a dirt road, more frequent oil changes may be necessary. Recommended oil brands for the Impala include Amsoil, Castrol Edge, Mobil 1, and Pennzoil Platinum. On average, an oil change for this sedan costs between $100 and $130, with labor charges ranging from $30 to $50.
The 2005 Chevrolet Impala with the 3.4L V6 base engine uses 4 quarts of 5W30 synthetic oil, while the two 3.8L V6 optional engines in the 2005 Impala require 4.5 quarts of 5W30 synthetic oil.
Here's a paraphrased and slightly modified version: "Engine oil with a viscosity grade of 5W-30.