well I got under the car this afternoon to re-fit my exhaust since its rubbing in some spots and I see this all of the drivers side pipe....anyone know what this is?? doesnt look like diff fluid to me but could be..im not sure...

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on the rear diff cover:



On top of the rear diff:

 

Thats the diff bushing and when they go bad fluid will leak from them.That is also the main support for the rear diff.

 

thanks bud! I just searched right after I posted this and found out what it was.....guess Im upgrading to SPL rear diff bushing and front diff bushings as well as maybe to the rear subframe