Rear main seal leak? [Archive] - Duramax Diesels Forum

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RENODMAX
07-24-2009, 01:35 PM
I have a mysterious oil leak. I thought it might be the turbo oil drain but I can't seem to get an oil when I reach back there. Drips down the pass side of the bellhousing. Whatchu guys think

emiller3
07-24-2009, 02:03 PM
I have a little drip from the same area.Wish I knew where it was coming from.:confused:

RENODMAX
07-24-2009, 02:21 PM
I have a feeling that's what it is. I ordered a new oil drain gasket just to be sure. But if it's a rear main it's not getting fixed

paint94979
07-24-2009, 02:23 PM
picture?

RENODMAX
07-24-2009, 02:27 PM
Of just oil dripping down the bellhousing?

paint94979
07-24-2009, 02:31 PM
Of just oil dripping down the bellhousing?

can you be sure it is coming from the rear main seal? apparently not or you wouldn't of made this thread:D

RENODMAX
07-24-2009, 03:09 PM
You can't see anything is the point. Just wondering if anyone has a had a rear main leak and if it's a similar one to mine

ripmf666
07-24-2009, 03:18 PM
Jordan if it was the rear main seal it would stay low on the bell and look like the front pump seal is leaking in the trans, if its up on the side of the bell its coming from the turbo drain of valve cover area.

RENODMAX
07-24-2009, 04:17 PM
Thank you Henry :D

FMOS
07-24-2009, 04:30 PM
I got the same oil leak...

I know for fact that my turbo oil supply line isn't in tight enough and is probably leaking a wee bit. But I have to drain the oil to be able to take that line off and tighten it up. If I recall I need a 21mm deep socket.

I usually have wet residual oil on the bottom of the bellhousing right behind the oil drain plug. Sometimes on the bottom of the trans.

RENODMAX
07-24-2009, 06:09 PM
I got the same oil leak...

I know for fact that my turbo oil supply line isn't in tight enough and is probably leaking a wee bit. But I have to drain the oil to be able to take that line off and tighten it up. If I recall I need a 21mm deep socket.

I usually have wet residual oil on the bottom of the bellhousing right behind the oil drain plug. Sometimes on the bottom of the trans.

My feed shouldn't be as it had new crush washers. I had to reuse my oil drain so I'm sure that's it

cmitchell17@comcast.net
07-24-2009, 07:40 PM
If its not, try AT-205 Re Seal you can get it at Car Quest Parts houses. It sealed up the annoying hydroboost leak that every single truck I have seen with one has had.