Coolant leak from rear differential?!

[Jslampe]

I know this can't be right (coolant leaking from the rear differential), but what else could greenish liquid be?

(see attachments)

 

[Scorzany]

Brake fluid leak?

Check the lines above your diff.

 

[Scorzany]

And that actually kinda does look like diff fluid. Doesn't look that green to me. Maybe the way the light is hitting it or the flash of your camera?

 

[Torxhead]

From the looks of that lower rear cover, it looks like a failed seal on that diff cover.

 

[mtnwhlr]

It's gotten water in it. Time for a clean out and new oil and check the breather that it's up high and working right.

 

[Posi]

Do you use distilled water and antifreeze, or did you go with the already mixed 50/50 jug?

 

[Jslampe]

And that actually kinda does look like diff fluid. Doesn't look that green to me. Maybe the way the light is hitting it or the flash of your camera?

It's definitely green.

Brake fluid leak?

Check the lines above your diff.

Not likely. It begins to leak when I idle it.

From the looks of that lower rear cover, it looks like a failed seal on that diff cover.

Yeah, something is failing for sure. What should I be looking for on the cover to indicate failure? Pictures? Anyone have a part number for this piece?

Going to change the fluid this weekend and report back.

 

[Lumpy Grits]

Stop driving it-
Bet you have it filled with water........
Check the axle breather line.
LG

 

[Jslampe]

Stop driving it-
Bet you have it filled with water........
Check the axle breather line.
LG

Will do. What exactly am I checking for? That it's up and out of the way? Anything else I should do?

Question: how would it have filled up with water? I haven't driven it through deep water.

 

[mriplaybass]

Bad wheel seals, vent tube, condensation, leaky pinion seal, lots of ways to get water in there.

 

[Lumpy Grits]

Will do. What exactly am I checking for? That it's up and out of the way? Anything else I should do?

Question: how would it have filled up with water? I haven't driven it through deep water.

Ck the front axle, along with tranny and t'case also.
What's the history of the jeep you have?
LG

 

[mtnwhlr]

Stop driving it-
Bet you have it filled with water........
Check the axle breather line.
LG

I'm glad he listens to you I said the same thing and got no response.

 

[Lumpy Grits]

I'm glad he listens to you I said the same thing and got no response.

I talk mo-better........

Sometimes, it takes more than one to say it........
LG

 

[mtnwhlr]

I talk mo-better........

Sometimes, it takes more than one to say it........
LG

I thought it was because you are older and wiser

 

[Belizean]

I thought it was because you are older and wiser

LG is just better shoveling shinola

 

[hole]

I'm going to guess there's no water in there, just a leak at the cover (gasket). The T19 I picked up years ago for my swap had a very "greenish" tint to the gear oil I drained out of it, and I'm relatively certain if there was any water it would have separated since the Transmission sat under the workbench of the guy I bought it from for years.

 

[Lumpy Grits]

The smell of the fluid should be a quick tell.
OLG