can you tell me where to get the ams diff fluid? i tried a google search and came up with nothing?Oh I should also mention that a lot of people on here including myself put up with some diff noise. Most people run AMS synthetic diff fluid this seems to halt the wearing process, and cancels out some of the noise. But judging by your description it sounds like it's too far gone.
This is caused from the pinion "crush sleeve" failing. When this part fails the pinion gear can move in and out, this causes gear misalignment, causing the jet engine sound, howling or whining. If your diff has been making this sound for a few months or so, the ring and pinion gears are now junk. Nothing you do at this point will do anything to correct the problem. No oil sold by any manufacturer can realign the ring and pinion gears. You need a diff rebuild with a good set of gears and a solid pinion spacer.yeahh sounds like a jet fighter gets really loud as i accel.