Gearbox oil and diff oil treatments! Or thicker viscosity available.

[suprasam77]

Hi guys. Just wandering if anybody has used any treatment oils or different viscosity oils on diffs or gearboxes.

My w58 bearings have become noisy and I know with integra type r's you can use landrover t5 gearbox oil to treat notchy or noisy boxes. So wandering if anybody has done the same with supra boxes?

Also I'm using my car more for drifting now and fear the LSD will wear out quickly on the standard fairly thin oil. So has anyone used upgraded oil without any problems?

Many thanks if anyone can help and point me in the direction of some decent oils.