Special Thanks to Jack & crew
 

I took my truck to have some new tires "Just in time for the weather" While I was there, Adam noticed the diff cover was wet.
Mean while Brian was banging out the tires... Adam dives under the truck(laying on his back) and starts breaking it down. The differential cover days were numbered. It could have been quite costly if it wasnt caught.
Thanks guys Happy Hoildays...

Make of the vehicle: withheld to protect the Innocent :D

Rot through?? My Chevy had the same problem. It was wet, but only in the middle of the cover after I cleaned it. I bought a new cover, went to put it on and found gear chunks behind it(BIG gear chunks). Fished 'em out, put on the new cover, and filled 'er up. No problems in 3 or 4 years, although I still drive with my fingers crossed. I should pull the cover and look again.

Yep cover had major scaling... Luckily there was still fluid in there and somewhat clean.

Brian - just get this so you can check it every day.

http://www.sfxperformance.com/parts/TRD8411.htm

Now, see if I was to do that, then I would have to wire in some LEDs so that I could check it without a flashlight, then all he "tuners" would be trying to steal it and I'd get arrested for backing over a number of them. C'mon Mikey, you have to think before you get me into trouble.