I have a 2006 EVO 9 MR SE. I am pretty sure the leak is coming from the rectangular plate on the top of the transfer case that has 4 10 mm bolts. The dealer is saying there is no gaskets between the plate and the transfer case. My mechanic is not sure ether. Any help would be greatly appreciated.

 

Mine does it once every blue moon, when I do hard pulls. I hear member on refer to it as sweating. Mine does not leak on the ground nor puddles suspended in the air around the 4 bolts, but their is dry indication of fluid like streak on a recently washed car if that makes sense.

 

did you recently change fluid or top fluid off somehow? You might overfill like I did. If you did overfill it, the vent on top of the transfer case would bleed out excess fluid.

 

Thanks guys for the responses. My mechanic figured it out. The problem is the square bracket that has the 4 bolts needs to be replaced because from what I can gather the venting valve is bad. Apparently there is only one in the country in Michigan and will be here in 3 days time.

 

Pretty certain your mechanic just took you for a ride... Enjoy

 

Maybe he did. Oh well it's fixed that is what I care about and for $35.00 not bad on the wallet.

 

Careful, if it continues to leak or leak at high rpm you have a seal leak, passenger side inner seal is leaking trans fluid into the tcase. I'd check my trans fluid too just to make sure it's topped off, u don't wanna have to do a tcase and trans. Safe then sorry

 

Blowngasket if the transmission fluid is leaking into the transfer case would that be a bad thing since they are different weight oils?

 

it would be terrible, When either side seal goes the trans fluid would leak out completly into the TCASE, The Trans fluid travels thru a oil gully to the passanger side bearing on the Tcase, this seal usualy goes first. When this happens the Tcase fills up with Trans fluid causing it to come out of the breather which is that plate with 4 bolts on the top. It comes out worse at hight RPMs, you can pretty much smell it hit your downpipe. When this happens the Trans will lose all the fluid, Why? cause the trans generates pressure, it uses the pressure to push the oil thru the oil gallories, and bad seals
Which is why i say Check your trans fluid. Also this will cause the Tcase oil to mix with the trans oil and possibly give your Tcase a nice whine to go along with a broken trans. Ive seen all of this first hand with my evo, one small seal caused thousands in repairs that i did myself.... Although i did replace my ACD Tcase with a built non ACD tcase and am far happier that i did, and my trans is built now by me and shifts better then ever.

So if you see oil around the garage floor, or around your Tcase its coming from somewhere.
So check your trans oil just to be on the safe side.
That breather should only leak if the Tcase is overfilled, and sometimes its overfilled with trans fluid...

 

The car is going to Speed Element to get fixed. I did not get charged anything for the labor.

 

I'm having this issue now where my trans fluid is mixing with my tcase fluid caused my shep build trans to blow up after 6 days of driving... I've replaced all axle seals axles all C clips and the inner passenger seal the trans fluid is still getting into tcase then pouring out the axle seal anyone have any suggestions

 

Its one of the 3 seals between the transfer case and transmission. You will have to change all 3. I just did this recently and no leaks so far.

 

I plan on picking up all three seals tomorrow from STM since I'm only 30 min out... Does anyone know why the transmission even have a oil galley going into the TC? if the fluids are not supposed to miss then why have them run into each other? i plan on replacing all three seals tomorrow hoping that solves issue should i replace the passenger inner axle seal also even tho i just did?