differential noise

[PBR]

Well I tried a synthetic 80w 140 Penzoil in the rear end, the noise is still bad, ie. loud howl at 62 mph when foot is on accelerator, as the diff heats up and viscosity increases it is slightly quieter but still bad. I anyone else having this problem? I am looking forward to Ocala next week to compare notes with other owners.

[MrCrowley]

Im pretty sure everyone here will agree the best to put in is Amsoil. pricey but worth it. Everyone?