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Discussion Starter · #1 ·
I think I have a transmission oil leak. I just had my driver's side axle replaced but don't see any leaks from there. I'm not sure what the exact area is called. Is it the transmission front seal? I'd like to call around for quotes and need to know what to tell shops. Just need an idea of price before I take it in for full diagnostics.

I spent a good amount of time under the car and couldn't find any other source of leaks except the one in the picture.
Thanks in advance!

Tire Wheel Land vehicle Automotive tire Hood



In the picture below I cleaned up the oil and suspect the gasket in that area is what is causing the leak.
Automotive lighting Automotive tire Tints and shades Auto part Automotive exterior
 

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That does not really look like ATF?
Use a white paper towel to wipe it up - it should be a red tint.

looks like motor oil to me - possibly coming from a valve cover or spool valve.
 

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2009 Odyssey EX Sterling Gray Metallic
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Even new cars with ATF leaks can have drops that look like regular oil. A good hosing down with brake clean will clean that off better. Unfortunately these pics don't show any clues to the source of the leak.
 

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2011 Odyssey LX, 136k miles
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I agree with all the above comments. First step in leak repair is to carefully figure out where it is coming from. Unless you're a dealer, in which case it does not matter so much, and you can just start replacing parts, without much care for whether it is needed or not.

Will add that it is easy (I did it) to damage the driver's side seal ( 91205-P0X-005 on my 2011 LX 5-speed; also, be aware that this generation of Odyssey used both 5 and 6-speed ATs, depending on year and trim level, so make sure you get that right) if needing to pry the axle loose from the AT. There is a c-ring that can get caught up in there, and gentle prying out while rotating the axle is my preferred solution. I was not careful enough, and damaged the seal.

To be extra clear, this would be at the point where the left axle goes into the AT. I would clean that area above and below very thoroughly (like 10x better than seen in the pics above), and see exactly what shows up, and where. The reason to be so careful is that if the seal is found to be bad, it will need to be removed and replaced, which is even more work than the careful cleaning.
 

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Discussion Starter · #7 ·
Thank you all for your answers The transmission fluid has always been changed per recommendation in the manual. It's definitely transmission fluid.. I took it to the shop today and we didn't find any leaks from the axle seals. Looks like the leak is happening where the transmission casing is bolted together. I found this picture online that shows where the casing is joined. Not sure if it takes a gasket or if it's just silicone. This is going to cost a pretty penny. The van only has 82K miles on it too :(
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Some leaks are meant to be lived with. If you can tolerate any drips on the floor, and can check your ATF level often enough to avoid running it low, that may be a workable solution that is definitely lower cost than a full repair.

Regardless of what the shop said, all the advice above about careful cleaning, etc. still applies, I think.
 

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Thank you all for your answers The transmission fluid has always been changed per recommendation in the manual. It's definitely transmission fluid.. I took it to the shop today and we didn't find any leaks from the axle seals. Looks like the leak is happening where the transmission casing is bolted together. I found this picture online that shows where the casing is joined. Not sure if it takes a gasket or if it's just silicone. This is going to cost a pretty penny. The van only has 82K miles on it too :( View attachment 169849
You could try some atp205........
That stuff has stopped numerous oil related leaks over the years.
They all never came back.
 

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+1 on AT-205

its worth every penny, and if its just a dried out seal, this stuff will sort it out.
no negative effects on the mechanicals, check out youtube success stories if youre skeptical.


use the odyclub discount code for 5% off.
 

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Discussion Starter · #17 ·
Thank you all for your helpful suggestions. I found a transmission specialist shop that would re-seal everything for half the price. When I took the car to them they told me it was indeed the axle seal! The aftermarket axle might have been the incorrect part and the car did not require a re-seal! I truly appreciate their honesty and will go back to them in a heartbeat.

I took the van back to the original shop that replaced the axle and explained to them what the findings were. They were a bit hesitant but agreed to take another look. Lo and behold they also found the leak in the axle seal and replaced both axle and seal under warranty.

The seal was leaking in an area that you couldn't see and the fluid would travel down the casing making it look like it was the gasket.
 

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Thank you all for your helpful suggestions. I found a transmission specialist shop that would re-seal everything for half the price. When I took the car to them they told me it was indeed the axle seal! The aftermarket axle might have been the incorrect part and the car did not require a re-seal! I truly appreciate their honesty and will go back to them in a heartbeat.

I took the van back to the original shop that replaced the axle and explained to them what the findings were. They were a bit hesitant but agreed to take another look. Lo and behold they also found the leak in the axle seal and replaced both axle and seal under warranty.

The seal was leaking in an area that you couldn't see and the fluid would travel down the casing making it look like it was the gasket.
Thanks for following up.

The only unexpected thing about all that is that you were able to find an honest shop. Well done. (y) :ROFLMAO:

Now that you know the answer, you might review the comments in this thread to learn even more.
 

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Aftermarket axle + old OEM seal often leads to leaks. That is basically the only place on a Japanese vehicle I pre-emptively replace seals (new axle gets a new seal).

-Charlie
 
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