The Valvoline Web site says that Valvoline full synthethic gear oil is OK all all limited slip differentials. I've always used this gear oil; however, as you all know, the LS diffs in Xterras say "Use on LSD Oil."

Do you think it's OK to use the Valvoline in my Xterra? I strongly prefer it.

And yes, I already have some rear diff gear whine that been's reported by many members of this forum. I'm assuming the Valvo full syn gear oil might help this.