Damn, my driveline is noisy!
The 90 has developed a new noise and I thought I'd see what sort of guesses were out there as to the cause.
At higher RPM's (as when cruising on the road) the truck sounds like a floor board has been removed - its just damn noisy, and this is a recent development.
There is no vibration, it doesn't sound like the high-pitched whine of a neglected transfer case. Its more of just a loud driveline noise.
I've checked all the fluids, t-case is full, trans is full, drive shafts seem to have no play, etc. I'll double check everything as soon as possible, but in the meantime it seems like all is in order.
I can tell I have some sort of engine oil leak, perhaps from the rear of the oil pan.
This is really confusing me, it seems to have come from nowhere...