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The 2001 Mitsubishi Eclipse with a 3.0-liter V6 engine requires 4.5 US quarts of 5W-30 oil along with a new filter. It is recommended to change the oil and filter every 7,500-10,000 miles or 12 months when using fully synthetic oil. If conventional oil is used, the interval should be every 3,000-5,000 miles or 6 months. Synthetic oil offers benefits such as improved lubrication for engine parts, longer time between maintenance checks, and better performance in extreme weather conditions. Thinner viscosity synthetic oils flow more efficiently in cold weather, providing enhanced protection against friction and corrosion. The cost for an oil change and filter replacement typically ranges from $115 to $130 including materials and labor.
The factory suggests using 5w-30 oil viscosity for the 2001 Mitsubishi Eclipse 3.0 model.