I'm guessing for 1 brownie point...
If it is leaking transmission fluid, it's a transmission oil cooler line.
Edit:
I can make out that it is toward the bottom running front to back, but I don't have the same design as yours. Mine run tight along the chassis.

 

Yes, these are transmission cooling lines, and the rubber hoses connect the metal piping mounted on the transmission to that affixed to the body structure. By the way, the space in between the two lines is where you can route a long extension to reach the starter mounting nut.

 

You can either move the clamp, or get TRANSMISSION Hose and replace it and the clamps. Subaru still has the hoses available and will be cut to the necessary length.

 

I was looking at diagrams from the FSM, but could't figure out which hoses these are. Do you have a part number? I already replaced the ones that connect directly to the radiator.

Are they these?

 

Yep, trans cooler hose.

 

If it's just the clamp that leaking, just get a screw type hose clamp/gas-line clamp. That hose looks dry ?

I would also think auto parts stores like NAPA would have oil resistant hose to cut to length and install.

oil resistant hose from NAPA - Google Search

 

Squeeze the hose and see if the rubber is still pliable first. As Max Capacity said, a worm drive clamp may be all that is needed to reseal the joint if the hose is still pliable. I've had hoses like this start leaking because the rubber is too hardened to create a good seal with the OEM style spring clamps. In this situation, probably time to replace the hose. Even with worm drive clamps, colder temps can cause hardened hoses to start leaking again because they become even harder and need more clamping force to create a seal.

 

The hose is hard and I’m gonna replace it and the other one. That’s exactly what happened. It’s too hardened to seal properly now with the spring clamp. That’s precisely why I’ll be replacing them. Cold weather is coming and a worm clamp won’t apply the proper pressure when the hose is cold. It’s easy peasy to change them out. I’ve got plenty of Idemitsu hp atf to replace whatever spills out.

I didn’t realize these were cooler lines. I thought just the ones that directly connect to the radiator were. Learn something new every day. 😊

 

These hoses are part of the same circuit that connects to the trans cooler in the radiator further forward. They go from the transmission, to hard lines, one splits off to the spin on ATF filter behind the battery, and the other goes to the trans cooler. There are more hoses in this circuit near the trans oil filter behind the drivers side headlight/bumper (pic below). Might also be worth checking those out if going to the trouble of replacing the others.

Hoses you circled in that diagram are the correct hoses.

 

I see. Thanks. I already replaced the two that connect to the spin on atf filter. They were hard and leaking atf. It makes sense that all these rubber hoses need to be replaced. They’ve endured thousands of heat/cold cycles and are 20 years old. I’d say they’ve done well. 😊

 

Have you looked at just using oil resistant hose, might be easier to find at most auto part stores ?

 

I just picked up some transmission hose at O’Reilly’s. Waiting for the car to cool off and I’ll replace the hoses.

 

I assume you will let us know how it goes...

Remember to leave enough hose for engine movement.

 

Hahaha! Yes, I’ll keep ya’ll in the loop! 😁

 

So removing these transmission hoses has been very hard! I’m cut up from the heat shield on the cat, my knuckles are cut. I’ve said more cuss words than I’m proud of and… the kicker… the proverbial cherry on top? The hoses AREN’T 3/8th inches inner diameter! So they don’t fit! 😭 They’re too small!

After all that hard work my car is a beached whale! 🤬😬🙄

Learn from me, don’t guess. Just bring the hoses to the auto parts store. I feel so stupid right now.

 

So removing these transmission hoses has been very hard! I’m cut up from the heat shield on the cat, my knuckles are cut. I’ve said more cuss words than I’m proud of and… the kicker… the proverbial cherry on top? The hoses AREN’T 3/8th inches inner diameter! So they don’t fit! 😭 They’re too small!

After all that hard work my car is a beached whale! 🤬😬🙄

Learn from me, don’t guess. Just bring the hoses to the auto parts store. I feel so stupid right now.

Don't. It has happened to all of us, even the professionals at some time. (They had to start somehow and if they say it hasn't, they lyin!😉)
I suggest if the car is needed, wear gloves, put the leaky hoses back on,, take gloves off, go get the correct size, come back, put gloves back on, show them who's boss.

 

I believe the hoses are 10 mm (when new). You can cut an old one in the middle and measure there. Having a 10 mm bolt on hand would help. If so, generic 1/2" and even 7/16", if available from the store, would be way too loose.

 

Aren’t those the common sizes? What do I do if they don’t have the size I need? I need my car. We’re already down one car that needs head gaskets and a timing belt. So I can’t wait for shipping.

 

I feel your pain. It took me 3 years to do a head gasket job and finally stop burning oil that should have took no more than a week, or if I did a garage job, a day. I have other examples unrelated to this forum as well.
It may be much easier if you were to remove the cat, but I am sure you have to remove from the manifolds and rear pipes, along with the sensors, at minimum, so it may cost more in replacing gaskets, and rusted parts, but may save time and injury. I can't make that determination, again, not the same set up as yours.
Also, in general when it comes to any form of exhaust systems, it has been to my experience you usually have to dis-assemble from the end, all the way back to where you are really trying to replace. Sometimes you get lucky and there is something in between with enough wiggle room and flex to not have to do all of that.
Perhaps the charms are in order!🤞🛠🍀🎃

 

Bryan, you’ve had more than your fair share of mishaps, that’s for sure. It’s pretty amazing you didn’t give up! Especially, after 3 years! Most people would have given up!

I should have taken the driver’s side tire off sooner, but I was being stubborn and got cut up for my stubbornness. Lesson learned…. the hard way as usual! 🤦🏻‍♀️🤣

Thankfully, the exhaust isn’t rusted, but I didn’t feel like lowering it just for two freaking hoses! Curse you atf hoses! You certainly got the last laugh. 😆

 

I see Walmart has 10mm hose. You can find it here, if I go to the page (walmart), it lists my info. So just a big picture for you.

Google Search

These are the gloves I use,

Google Search

 

UPDATE . I went back to O’Reilly’s with both old hoses and a clamp. I ended up buying

Hayden Transmission Oil Cooler Hose - 105.

Before messing with it on the car, I tested it on my old transmission and it went on snugly and the clamps fit. So I knew it would work.

Thankfully, my friend cut the hose and put them on for me. I still have a decent amount of hose leftover. I’ll test tomorrow for leaks and top up the transmission fluid.

What a day. Lol!

Thank you guys for helping walk me through this. If I had to do it over, I’d have just ordered the OEM hoses and clamps and called it a day.

 

Glad you got it resolved in short order. Now rest and heal.

 

Thank you. Even though I cheated and had someone else put the hoses on for me, I still feel victorious for even getting the hoses off in the first place. That was the hardest part!