well i just bought my stang about a month ago (2002 GT). a little while later i noticed a kind of clunk noise coming from the rear when i put it in reverse. now it is leaking differential fluid. Any help would be much appreciated! Thanks

 

Do you want help on what the cause was or help on how to fix the leak and replace the oil?

 

Block the front wheels, jack and support the back of the car, and pull the diff cover (with a drain pan underneath). Check for any damage on the gears, excessive play, or anything like that, as well as inspect the fluid for chunks of metal. Then reseal that bish with a gasket/sealant/both, and refill fluid via the full plug on the front of the pumpkin (use a 3/8 ratchet exension to get the plug out). Fill fluid until it comes out of the filler hole.


And dont forget the friction modifier

 

Friction modifier would be needed for a limited slip differential.

The clunking could be excessive backlash or worn out pinion bearings.

 

thanks for the help guys! and to airbrontosaurus, any help on what could be causing this and/or how to fix would be appreciated