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Discussion Starter #1
Hi everyone. Need help troubleshooting a rear leak. In the pics below you can see the red arrows where the droplets are forming.
In the 2nd/3rd pics you can see where the dye is coming down the center of the flywheel behind the engine once it is shut off.
I've already replaced the upper oil pan gasket, but did not put silicon in the corners since I could hold it up in place just fine. \
So, did not think the ultra black/red would be needed. After I road tested I came back, shut it down and let it sit for about an hour.
Under the light I can see a significant line down the middle of the flywheel and some lines from the corners of the upper oil pan outward (3rd image).
My thoughts at this point is that the flywheel is throwing the oil up everywhere when spinning which is causing it to to puddle in the upper corners of the bell housing and the upper oil pan housing.
It was my understanding after reading many posts that that line down the middle is a dead giveaway that I have a rear main seal leak.
BTW, there is nothing coming from the top end down the sides of the engine at all. So, I can rule out the puddles in the corners as being a top-end leak (valve cover, intake manifold).
There is no leak at all anywhere else around the upper/lower oil pans or the front where the timing chain cover is.
Thoughts? Is it still possible that my upper oil pan gasket is the culprit or can I rule that out now? Is this the 100% dead giveaway that its the rear main seal?

Thx guys and enjoy the pics!
 

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Discussion Starter #5
Perfect, thx space-ghost. Did you fix yourself? I've got a 4" lift and can get underneath easily (swapped out both diffs that way), but I don't know if its an easy install without a vehicle lift since I will have to drop the tranny/transfer case to get to the back of the engine where it is. Maybe its worth the $300 to have someone do for me?
 

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If I only had to pay $300 I probably wouldn't have done it myself. I was thinking the cost would be much more.

The knowledge learned was pretty valuable. I feel confident next time.

I picked up a Harbor Freight tranny lift, and used another jack to support the engine. Also this extension (20in) really came in valuable when dealing with the mounting bolts on the top side of the transmission.
 

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This is the vid I used, and a bunch of pictures I was talking during the process..
It took me a couple weekends though.


Forgot with that 4in lift you should have plenty of space to get up in there, I was able to get a good view of the top side of that transmission once drooping that transmission down and I have a 2.5" lift.
 

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Np, here is a final pic of the rear main seal mounted. There is a plastic cone that comes with the replacement seal, make sure to use it during the installation. It helps make sure the seal is put on correctly around the crank shaft, once installed and seated properly it can be removed.

Good luck....
 

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