Rear main seal

[john arata]

Thought i had a leak from my oil plug guy said its a main rear seal.Its leaking very little and my oil is never low.
Are 2004 TJ 4.0 known for rear seal leaks.Also can i just use that bar leak stuff ,or would you have it fixed.
Also any idea of price
As always thanks

 

[Chris]

Thought i had a leak from my oil plug guy said its a main rear seal.Its leaking very little and my oil is never low.
Are 2004 TJ 4.0 known for rear seal leaks.Also can i just use that bar leak stuff ,or would you have it fixed.
Also any idea of price
As always thanks

It's around 2-4 hours of labor so factor that by whatever the hourly rate is.

 

[Chris]

Here's a How-To as well, so you know what's involved:
http://wranglertjforum.com/threads/rear-main-seal-replacement-4-0.826/

 

[Serbonze]

Thought i had a leak from my oil plug guy said its a main rear seal.Its leaking very little and my oil is never low.
Are 2004 TJ 4.0 known for rear seal leaks.Also can i just use that bar leak stuff ,or would you have it fixed.
Also any idea of price
As always thanks

The 4.0 is notorious for the RMS leaking.

 

[Jerry Bransford]

That's a great writeup.

 

[Chris]

We should be fortunate that our rear main seals are two pieces, and this do not require dropping the transmission, as would be the case on most vehicles.

 

[Serbonze]

I went on vacation for a week and left a small plastic plate under the Jeep to see how much oil I lost. This was after eight days.

 

[Chris]

I went on vacation for a week and left a small plastic plate under the Jeep to see how much oil I lost. This was after eight days.

View attachment 3690

Might be time to do the rear main.

 

[Stinger]

Might be time to do the rear main.

Or leave the pan under it and live with it.
Not trying to be a smart ass but these GD things are such a PITA of piss poor engineering!

Why does CD seem to think just because they have a corner on the market we will put up with this kinda crap forever?
They have so many engineering fails it would fill a huge ("uge") three ring binder.

 

[Chris]

Yes, the rear main seal is notorious on these things, no doubt about it. I changed mine out though and it's been leak free for a while now though (knock on wood).