I recently saw on the website RockAuto for my Nissan Frontier 2012 Pro4X an additive for the differential. I didnt know it needed this. Is this a nice to have because my manual doesnt say anything about using an additive.
What type of additive? We don't have clutch pack limited slip diffs, so there should be no friction modifier needed. However, it shouldn't hurt to use that type of fluid in a regular open differential.