NS-3 CVT fluid is a transmission fluid designed specifically for Nissan’s line of CVT engines12. It is used in newer Nissan vehicles from the 2013 model year onward2. It is a blend of high-quality base oils and additives that provide protection against wear and tear, high-temperature oxidation, and sludge formation1. NS-3 CVT fluid has specific frictional properties that optimize the performance of Nissan CVTs2. There are other brands of transmission fluids that are suitable for NS-3 use, such as Valvoline and Castrol.