Had my rear differential fluids changed at the dealership last week and noticed this today




Should I be worried and take back to dealer?

 

The only problem I can see is if that much excess is also on the inside, where it could break off and get into the works.

Bring up that point with the service adviser, and show it to him. See what he says.

 

makes me want a lubelocker reusable gasket when i do mine.

 

Im with ronjenx on this one...some seeping is ok and normal...that is quite a bit.

 

If there is that much on the outside, there is that much on the inside. Ask to see the repair manual and see what the reccomended amout of sealant is. My guess is that the repair manual specificaly warns not to use an excessive amount.

Why did they open the diff instead of just sucking out the old oil through the fill hole? I would only take the cover off if the oil was contaminated with water or had metal shavings.

 

Looks like somebody was eating cupcakes when he changed your fluids.

 

From the service manual:
Apply a 6.35 mm (1/4 in.) bead of Mopar Silicone Rubber Sealant or equivalent to the housing cover.


There is a drain plug on my diffs. I assume all the JK have them, too.

 

That's just crappy work.

 

I'd check your plugs to make sure they weren't stripped or something. Nothing explains why they chose to open the diffs rather than use the plugs.

 

Thats what you call buttering the toast. Now imagine if the mechanic that did your job was a bodyman and spent his day slinging bondo. Be glad you didnt have to take it to him for any collision work