Oil 400N

400N is a Group II base oil that contains more than 90 percent saturated substances, less than 0.03 percent sulfur, and has a viscosity index of 80 to 120. They are often produced using the hydrocracking method, which is a more complex process than that used for Group I base oils. Since all hydrocarbon molecules of these oils are saturated, Group II base oils have better antioxidant properties. They also have a cleaner color and are more expensive compared to Group I base oils.