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Old 08-17-2011, 07:10 AM   #1
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2500 miles and a leaking differential?

So, I went to get my oil changed and the guy calls me out and shows my that the front differential is leaking. I don't freak too much as I know it is under warranty.

I take it the next morning to Jeep and they say no problem, they will take care of it. I tell the guy that I have heard about some mechanics just slapping some sealant on there and calling it fixed. He assured me that was not going to be the case here.

They call me, tell me it is fixed. I go to get my Jeep and on the invoice, it lists parts as 1. sealant and 2. fluid

I look under the Jeep, and there is orange sealant around the differential. I asked the guy and he says they replaced the gasket and used sealant around it the be sure it was a proper seal.

I am not mechanic but any stretch but I am fairly sure that if a gasket is replaced properly, then sealant is not needed. Am I correct? Or is this orange sealant the proper thing to use?

Thanks for the inputs

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Old 08-17-2011, 07:25 AM   #2
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Usually the "gasket" IS sealant. You squeeze it from a tube to form a bead and when the cover is applied, some will ooze out and there will be a ridge of it around the differential. The gasket sealant comes in different colors for different applications. Usually "black" is used for differentials. I have never seen "orange."
There are some gaskets available to be used, but I doubt the dealer used one, especially since it wasn't listed as a part. I would label this repair as "suspect."

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Old 08-17-2011, 07:28 AM   #3
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Usually the "gasket" IS sealant. You squeeze it from a tube to form a bead and when the cover is applied, some will ooze out and there will be a ridge of it arounf the differential. The gasket sealant comes in different colors for different applications. Usually "black" is used for differentials. I have never seen "orange."
There are some gaskets available to be used, but I doubt the dealer used one, especially since it wasn't listed as a part. I would label this repair as "suspect."

Thanks Tom,

Yeah, it just does not seem correct to me. I have kept an eye on it and no leaks so far. But, I just feel it is not correct.... I hate that nagging feeling.
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Old 08-17-2011, 07:43 AM   #4
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I used this stuff when i changed my diff fluid and cleaned out the housing a few months ago. Easy application, and zero leaks since then.

Permatex High Temp RTV Silicone - Street Bike - Motorcycle Superstore
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Old 08-17-2011, 08:00 AM   #5
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Using sealant for the differential cover is usually what is done these days. Sometimes a gasket is used but sealant is still applied along with it. I say donít worry yourself over it. Just check it every once in a while whenever you are giving the underside of youíre a look over.
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Old 08-17-2011, 08:04 AM   #6
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Using sealant for the differential cover is usually what is done these days. Sometimes a gasket is used but sealant is still applied along with it. I say donít worry yourself over it. Just check it every once in a while whenever you are giving the underside of youíre a look over.
I agree, the bottom line is this, as long as it isn't leaking don't sweat it. When I dropped the tranny pan in my Liberty I was surprised to see they didn't use a gasket from the factory. These RTV sealants are used in many applications. They are cheaper and if done correctly don't leak.
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Old 08-17-2011, 08:14 AM   #7
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Quote:
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I agree, the bottom line is this, as long as it isn't leaking don't sweat it. When I dropped the tranny pan in my Liberty I was surprised to see they didn't use a gasket from the factory. These RTV sealants are used in many applications. They are cheaper and if done correctly don't leak.
The suspicion here is the RTV was not used as the gasket, but was merely applied to the outside edge.
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Old 08-17-2011, 08:18 AM   #8
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The suspicion here is the RTV was not used as the gasket, but was merely applied to the outside edge.
I got it now thanks! Some guys use grease to hold the gasket in place, some dab it with RTV, and some use RTV alone. I think if the leak is stopped the OP is GTG.
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Old 08-17-2011, 08:23 AM   #9
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I use black RTV for my differentials and it hasn't leaked a drop. The OP's concern is that he brought it in for a warranty repair and instead of taking the proper steps of removing the cover, scrapping off the material and re-applying new RTV, replacing the cover and fluid, they just slapped some on the outside.

A quick google search confirms that orange RTV is for high temperature applications.
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Old 08-17-2011, 08:26 AM   #10
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I use black RTV for my differentials and it hasn't leaked a drop. The OP's concern is that he brought it in for a warranty repair and instead of taking the proper steps of removing the cover, scrapping off the material and re-applying new RTV, replacing the cover and fluid, they just slapped some on the outside.

A quick google search confirms that orange RTV is for high temperature applications.
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Old 08-17-2011, 08:51 AM   #11
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Thanks everyone. I am feeling somewhat better.

I have paperwork that shows they did the repair and I will check it everyday for a while to be sure it is not leaking again. If this orange stuff fixes the problem, then I am fine with it. I am grateful the oil guy pointed it out as I never would have seen it.

Guess it goes to show that a walk around is warranted even on new vehicles every once in a while.

Thanks again everyone for the advice, info and opinions.

Peace,
Mick
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Old 08-17-2011, 09:01 AM   #12
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Originally Posted by daggo66 View Post
I use black RTV for my differentials and it hasn't leaked a drop. The OP's concern is that he brought it in for a warranty repair and instead of taking the proper steps of removing the cover, scrapping off the material and re-applying new RTV, replacing the cover and fluid, they just slapped some on the outside.

A quick google search confirms that orange RTV is for high temperature applications.
According to the first post the OP says this: I asked the guy and he says they replaced the gasket and used sealant around it the be sure it was a proper seal.

OP keep an eye on it, I think you'll be fine. I've seen a few ways of installing gaskets and different things to hold them in place. I guess it depends on the tech that did the job. The last thing that tech wants is you coming back with a leak from his repair job.

OT- I just used JB Weld, Prematex Blue and lead flashing to fix a rotted through oil pan on an old Ford Aerostar. LOL over 200,000 miles on this thing, and 500 miles into the repair and it is no longer leaking! I don't want to jinx myself, but.................It beat dropping the pan, a job that calls for about 4 hours labor, in a vehicle worth $300 on a good day.
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Old 08-17-2011, 09:51 AM   #13
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well it sounds like this orange stuff may be stronger and better than just a gasket. LOL As I said I know nothing about this stuff..... but if it leaks, it will go back! I still ahve MUCH warranty, especially since I bought a life time warr.
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Old 08-17-2011, 10:12 AM   #14
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Copper Ultra seal or nothing
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Old 08-17-2011, 10:34 AM   #15
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Was given the grey RTV stuff when I did my Tjs Diff--slapped on a bead bolted back up and called it a day. Did not follow the directions like I should of.. No leaks what's so ever
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Old 08-17-2011, 11:15 AM   #16
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well, again, I am feeling better about this orange fit. I am hoping they have done what they were suppose to do and it remains leak free.

This RTV stuff sounds super strong
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Old 08-17-2011, 11:24 AM   #17
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I had the same issue on the front diff. My understanding is that there is no gasket - just RTV sealant. Dealer removed the cover, cleaned, resealed, refilled, and sent me on my way. No leaks, but definitely a messy job relative to the factory. Lots of goop around the bolts for belt and suspenders (they used light gray stuff on mine - not black or orange).
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Old 08-17-2011, 04:25 PM   #18
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I had the same issue on the front diff. My understanding is that there is no gasket - just RTV sealant. Dealer removed the cover, cleaned, resealed, refilled, and sent me on my way. No leaks, but definitely a messy job relative to the factory. Lots of goop around the bolts for belt and suspenders (they used light gray stuff on mine - not black or orange).

interesting. one would think it would be a universal fix
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Old 08-17-2011, 04:34 PM   #19
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No real problems with the front diff.-

It rarely IF EVER--gets any hotter than ambient environmental temps !!

And relative "0" fluid pressure !!

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Old 08-17-2011, 04:36 PM   #20
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Honestly I think they use whatever gasket sealant they have laying around. Black, blue, gray, orange, etc. will work. They might not use what is best for the job, but as long as they don't get a come back in their minds its all good. JMO
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Old 08-17-2011, 05:00 PM   #21
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I can't believe they would use orange and have it spooging out everywhere. Did they also put a sign on the back that says they have a bunch of hacks working for them? A good repair is an invisible repair. They should have used a less conspicuous color.
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Old 08-18-2011, 09:08 PM   #22
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I agree...sounds like they were a bit sloppy. My '02 Jeep Liberty used an RTV gasket on the transmission pan from the factory. Stuff was on so good when I changed it out, that I had to order a new pan to ensure a tight seal when replacing. I used RTV putting it back on and no issues at all. I think you run into problems when the proper wait time is not observed for cure out before refilling, or if you do not run the RTV around the screw holes.

Sounds like you are gtg though. I'd probably keep an eye on it for a week and then forget about it.
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Old 08-19-2011, 04:03 AM   #23
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Sounded sloppy to me too. As long as it isn't leaking now I doubt the service writer will allow the tech to redo the job neatly. This is just another reason why I try and stay clear of dealerships and repair shops when I can do the work myself. Even when under a warranty, if the repair is cheap enough for me to fix, I'll do it myself.
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Old 08-19-2011, 07:09 AM   #24
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I will try to get pics over the weekend. Maybe I am just expecting too much? I am very meticulous about things... I don't know. Just seems it should have been at least cleaned.
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Old 08-19-2011, 07:31 AM   #25
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Having RTV squeezed out a bit is not exclusive of just a dealer service; most other shops do the same. Iíve used it a lot over the years and have always wiped it clean wherever it was exposed; I like the clean look. If it looks to be just smeared on then the tech probably did a half ass job of doing the same. Itís no big deal and I doubt that he didnít do what was written on the invoice. Just putting RTV over a leak will not seal it. Oil will always find a way out if not done properly.
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Old 08-19-2011, 07:36 AM   #26
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I would take it back and request the correct Gear sealant that mopar requires for the repair
As a former Chrysler parts dept manager I know the warranty covers a tube of
"gear sealant" it's gray in color and any excess should be cleaned up before it dries
If you need the part # let me know
This stuff is oil resistant and will not break down like regular RTV
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Old 08-19-2011, 08:01 AM   #27
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I will try to get pics over the weekend. Maybe I am just expecting too much? I am very meticulous about things... I don't know. Just seems it should have been at least cleaned.
If it really bugs you, you can run a razor or sheetrock knife around the edge of the diff cover and pull off all the excess material. The seal is made by the material between the cover and pumpkin, what you see is just excess squeezed out.
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Old 08-19-2011, 09:38 AM   #28
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I would take it back and request the correct Gear sealant that mopar requires for the repair
As a former Chrysler parts dept manager I know the warranty covers a tube of
"gear sealant" it's gray in color and any excess should be cleaned up before it dries
If you need the part # let me know
This stuff is oil resistant and will not break down like regular RTV

Thanks Outlaw,

Should I be concerned with the orange? Another poster mentioned it was indeed for high temp... I was feeling ok about it, but now I am concerned again. How long ago were you with CJD and could the RTV have changed since then?

Thanks
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Old 08-19-2011, 12:10 PM   #29
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I have 9000 miles on my 2010 and had the same issue....same answer and same shitty fix. I had to get under there and cut the excess orange (My jeeps falling apart) rtv flag off the mechanic at the dealership left behind....Im not happy to say the least.

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