Low pitched noise/resonance from drivetrain(?) - any ideas?

[tmpE86]

Originally Posted by julezw

I'm going to get diff and X case fluids changed and have a second attempt at diagnosis this time with a new indy mechanic.......as dealer couldn't diagnose it, surprise surprise. I'm also contemplating a partial tranny oil change.

I'm starting to get worried as the noise is getting worse. Its also embarrassing sounds like I'm driving some crappy van/ truck that is on its last legs I'm contemplating being loose of this car as I have had to spend lots of dough recently and if this turns out very expensive its time to part with the X. Will see.

Ever find a solution to your problem?