The 2005 ford taurus has a 3.0 l v6 engine that takes4.5 quarts of oil. the recommended type that you should try to stick with is a full synthetic 5w-20. the brand you decide on is up to you and any of the major brands like pennzoil, castrol, mobil 1 etc. will work out just fine. 5w-20 is a good option for year round protection and if you do live in an area with a bit of a colder climate your vehicle will get the benefit of starting easier in the winters with this oil weight. if you do go with the synthetic oil then you can stick with oil changes every 7,500 miles rather than 5,000 with conventional oil. -
The 3.0l v6 vulcan engine in the 2005 ford taurus requires 4.5 quarts of synthetic oil. the 3.0l v6 duratec engine in the 2005 ford taurus requires 6 quarts of synthetic oil.