khasper980

Looked up gear noise on youtube in a mustang, it's definitely not the sound my car is making. Tomorrow I'm going to a Ford dealership to talk to a technician there and see if he can help me out. Thanks for the quick responses everyone, much appreciated
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Boneman

Post an update and any conclusions once you've nailed it down. Good luck!

pascal

Check your gear lube level in your rear axle as well...
The factory put the minimum in there and it will crap out for sure.
That's what happened to me and it started to make noise at about 60K miles.
At the time I thought it was that cheap T5 wearing out but it turned out that it was the rear axle as it got louder and louder.
Finally, I just swapped to a 8.8 this weekend and I swear there was only a week left on that piece of junk 7.5 it was so loud, lol.
Not saying that you have a rear axle problem but change the oil now anyway, it's due.
And also, good idea to switch to Mobil one in your trans like Boneman stated.
It will feel like a different car...