I am thinking of trying some AMSOIL synthetic gear lube in the diff to stop my wine since it seems to be holding up well and is just annoying at times when not listening to the radio to have to listen to the wine. My V has 46k miles and hasn't blown a diff yet. I got it used, but think it has had all the TSB fixes for diff protection other than a new diff or anything big. Just want the wine to go away. What gear lubes are known to work well? And what weight and viscosity and such would be best as AMS OIL offer a few different options with their synthetics?