I'd like to change the oil in the rear axle of my 2012 F150, 8.8 rear end. I'm assuming its open and not limited slip. It specs 75W140. My question is, will it be ok to use Valvoline Synpower 75W140 or should I use a more boutique oil like Amsoil, Redline, or Schaeffers? I never tow anything with this truck.