Differential weep ?

Truck sitting at 55k miles noticed possible weeping from the rear differential . I did do a fluid change a few months back wondering maybe if it was slightly overfilled and drained out of overflow tube or coming from a bolt area on top .

 

Crack a beer, relax, and buy your girlfriend some flowers

 

Nope

 

It’s a design flaw in these trucks. I took mine to the dealer 5-6 times for this and they finally slapped on a newly painted diff housing. It’s already starting to seep at the bottom bolt.

 

Go find something else to worry about brother!

 

I assume you don’t have a breather on your rear diff? If not install one and report back. That should take care of your problem

 

Don't they all come with a factory breather?

 

The problem is clearly stated on the sticker on the diff nose.

 

Yes absolutely, but not an extended breather like the front. Pressure will force gear oil out the short rear breather, a longer hose will likely solve OPs problem.

 

Post #1931 has the weeping rear diff TSB I had addressed in 2017. Your pictures don’t look that bad.

https://www.tacomaworld.com/threads...ble-loss-of-control-of-vehicle.488536/page-97

 

Torque the third member nuts.

 

Brother, I'm trying to understand your point but I am struggling. Stock length or extended, the tube (and thus the pumpkin internals) are feeling the exact same pressure. Making them longer just gets them out of the wet muck.

 

Sure I hear ya. I had a similar issue where my rear diff was appearing saturated like OPs. When I crawled down there I noticed what appeared to be oil around the breather. I installed an extended breather behind the tail light and the issue didn’t return.

Maybe it won’t work for OP but it’s an inexpensive option to try

 

If you replaced the breather when doing the install of the extension, maybe the stock (original) breather was sticking.

 

Looks like it but it seems like when the diff heats up, any uncleaned oil you may have splashed during the diff change. Here's what mine looked like a day later when I sprayed some fluid film around the OEM diff breather. Hasn't come back since.