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Name that leak

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Old Jun 21, 2023 | 04:11 PM
  #1  
mtb_frk's Avatar
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Name that leak

Haven’t driven my truck in a couple days. See a small puddle under the truck where something has been dripping. It’s in the front, passenger side. I can’t really climb under the truck due to some health issues, but couldn’t really see anywhere it was coming from. Clear and oily feeling, no smell.
2018 F-350, gas engine.

Any thoughts? We got back from camping, and it’s been parked ever since with no leak spot before our trip. Camper is small, and it was a short trip.



 
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Old Jun 21, 2023 | 04:48 PM
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possible A/C defrost drain out?
 
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Old Jun 21, 2023 | 05:17 PM
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I'd name the leak Bubba.

Pretty small spot, doesn't look like it was bigger and then dried up some.
Maybe put a piece of cardboard under there and see what collects on it.
It's too close the front for the a/c condensation drain.
 
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Old Jun 21, 2023 | 06:08 PM
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Rub your finger in it good and smell it. Might give you good indication of what it is or isn't. Couls be coolant, could be a couple different kinds of oil.
 
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Old Jun 21, 2023 | 06:14 PM
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Originally Posted by djousma
Rub your finger in it good and smell it. Might give you good indication of what it is or isn't. Couls be coolant, could be a couple different kinds of oil.
"Clear and oily feeling, no smell"
 
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Old Jun 21, 2023 | 07:16 PM
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I put a plastic lid down and so far it’s dry. Whatever it is, which is under the lid, is all dried up on the concrete.
 
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Old Jun 21, 2023 | 07:42 PM
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Has anyone guessed antifreeze yet?
 
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Old Jun 21, 2023 | 08:57 PM
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Originally Posted by GAZZILLA
Has anyone guessed antifreeze yet?
Except for it being clear with no smell...
 
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Old Jun 21, 2023 | 09:03 PM
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Originally Posted by Ltngdrvr
Except for it being clear with no smell...
But it feels oily, antifreeze.
 
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Old Jun 21, 2023 | 09:08 PM
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Originally Posted by GAZZILLA
But it feels oily, antifreeze.
Except for it being clear with no smell...
 
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Old Jun 22, 2023 | 08:00 AM
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A/C lubricant oil is clear and no smell (at least to me). Based on location, it could be the condenser or an A/C hose/tube. You might have sucked in a pebble and started a leak. If it's your A/C, it will work until the refrigerant level drops too low, which won't take long if you've started leaking A/C lubricant.

My disclaimer is I haven't worked on these newer trucks and things change but A/C lubricant is clear (or at least it used to be and maybe still is).
 
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Old Jun 22, 2023 | 08:34 AM
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Originally Posted by '65Ford
A/C lubricant oil is clear and no smell (at least to me). Based on location, it could be the condenser or an A/C hose/tube. You might have sucked in a pebble and started a leak. If it's your A/C, it will work until the refrigerant level drops too low, which won't take long if you've started leaking A/C lubricant.

My disclaimer is I haven't worked on these newer trucks and things change but A/C lubricant is clear (or at least it used to be and maybe still is).
I had considered that, but by the time that much refrigerant oil would leak out, there most likely wouldn't be enough refrigerant left to keep the a/c blowing cool.
The OP didn't mention anything about the a/c not blowing cold.

I had also considered it could be P/S fluid, but that is on the opposite side from the steering box.
 
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Old Jun 22, 2023 | 09:01 AM
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I'll also vote for A/C oil. In the pic it only looks about the size of a quarter. I'd look at the compressor closely and the lines. A/C may still be fine if it just started, buy I'd keep an eye on it.
 
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Old Jun 22, 2023 | 09:51 AM
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Without any more details that looks like AC condensation to me and it's in that location as well I believe. But the size of the AC condensation would likely be bigger than that and would also dry up like water would.... I don't think you're going to get a definitive answer on what it is based on the information you've provided unfortunately....
 
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Old Jun 22, 2023 | 11:05 AM
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Originally Posted by CheeseheadFord
Without any more details that looks like AC condensation to me and it's in that location as well I believe. But the size of the AC condensation would likely be bigger than that and would also dry up like water would.... I don't think you're going to get a definitive answer on what it is based on the information you've provided unfortunately....
Yeah at first I thought it was from the AC as well as it’s in the same area. But it was 2 days since I’ve driven the truck. I did unload some camping stuff from the bed of the truck but not much. If it was more than 150lbs of stuff I would be surprised. It was for sure oily feeling, as it was slick. But it dried up, and hasn’t leaked since.
 
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