Just noticed this today. Is this deserving of attention? Seal hasn't held up? 57k miles.

 

bump

 

I know the manuals on our trucks say the rear diff never needs to be changed, but I change mine every 25K. If that were my truck and I noticed what believed to be a bad seal, I'd be draining my diff and resealing this weekend. better safe than sorry.

 

Sure wouldnt hurt to change the seal and fluid.

Mine needed a pinion seal at 68k so I had the fluid and seal and the differential gasket replaced. Cost me $50+ fluid, seal, gasket and friction modifier to have a friend do it.

 

Great, thanks guys. Looks like I have a project next weekend.

 

BTW the fluid is $18.99 a quart and youll need 3 quarts.

 

after seeing this post I went out and looked at mine and its doing the same thing............... LOL
It has 71000 miles on it!! I need to change mine out as well!!

 

Called O'reilly today and would be able to get some Royal Purple 75w-140 for $17.99/quart. Guess that's what I'll go with. Fix it now or later I guess..

 

I just did mine today along with an oil change!!