Trans fluid leak after heavy hauling - Ford Powerstroke Diesel Forum
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post #1 of 19 Old 08-11-2012, 07:28 AM Thread Starter
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Trans fluid leak after heavy hauling

99 F350 4WD dually automatic 100K miles, all stock for the most part. Just returned from trip about 5 hours on the road, outside temp around 90, several mountain passes 2-3000 ft. Hauling heavy camper and towing boat. Truck ran fine, has been no transmission slip or shifting problems. Upon stopping at home and backing up noticed about a half cup of transmission fluid leak onto the road and trail back into driveway where about another half cup leaked out. The leak stopped and it does not leak now when truck is running. It appears to be leaking from a cover attached to the bottom of the bell housing. The cover looks like it has a small hole in the bottom.

My mechanical knowledge is limited and I have read several posts referring to the torque converter and front seal. My assumption is that the leak is related to overheating. My question is whether there is some kind of "vent" that the fluid would leak out of when it overheats? Or am I just being too hopeful and there is a seal that needs replacing? If so, specifically what seal are we most likely talking about? Thanks for you help. Sorry if this is not correct forum, first post.
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post #2 of 19 Old 08-11-2012, 07:47 AM
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your sure it didn't puke out the dipstick ?
the vent is on top so it would drip down the body

what you read about is probably the correct scenario front seal issue

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post #3 of 19 Old 08-11-2012, 07:52 AM Thread Starter
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Haven't checked whether it leaked down from the top. Thanks
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post #4 of 19 Old 08-11-2012, 08:25 AM
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wont be the TC i wouldnt think. most likely it puked from getting overheated. what was your trans temp? do you know? smell the fluid on the dip stick. does it smell burnt? if so, id rec a fluid change and filter change and use synthetic fluids. get a bigger trans cooler like from a 6.0 truck.

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post #5 of 19 Old 08-11-2012, 06:57 PM
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Sounds like the front seal. Mine did the same thing on stock tranny. The seal will flatten out where it contacts the tc and will puke some fluid.

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post #6 of 19 Old 08-13-2012, 03:03 AM
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i have heard of this as well. i remember a friend of mine having this issue now.....

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post #7 of 19 Old 06-25-2015, 05:12 PM
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Would it leak from the front seal or begin leaking from there only after a heavy haul? Mine had no signs of a leak until after a heavy haul today and there is a decent bit of fluid that leaked out.

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post #8 of 19 Old 06-25-2015, 05:27 PM
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did you notice this is 4 years old ?

also the OP never came back after that post

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post #9 of 19 Old 06-25-2015, 05:33 PM
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I did notice that it was from 2012 (3 years old).

This was one of the threads that came up under my search and was closest to my symptoms. I just thought I'd ask here rather than create a new thread. It bumps to the top anyway.

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post #10 of 19 Old 06-25-2015, 06:07 PM
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I suggest rereading post #4. Most likely got hot.

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