Deleted ... read your question incorrectly.

 

Actually, the diffs are on the list too!, but it's specifically the CVT info I'm looking for.
Thx.
doug

 

Maybe this will help:
* Also, it's always good practice to remove the fill plug first as noted below - because if you drain it first & then cannot remove the fill plug you're probably going to have to have it towed somewhere to resolve that problem*

 

For the 690 CVT. Double check it is the same.
2. CVTF
A: INSPECTION
Check for leakage of CVTF from transmission.
B: ADJUSTMENT
CAUTION:
• CVTF level changes along with CVTF temperature. When inspecting CVTF level, observe the specified
CVTF temperature.
• Always use specified CVTF. Using other fluid will cause malfunction.
1) Idle the engine to raise CVTF temperature to 35 — 45°C (95 — 113°F) on Subaru Select Monitor.
2) Operate the select lever in P → R → N → D and D → N → R → P to circulate CVTF with the engine idling.
3) With the engine running, lift up the vehicle and remove the filler plug.
CAUTION:
Pay special attention to the following operations as the engine is at idle.
NOTE:
CVTF is at the specified level when it is up to the filler plug hole lower section.
(A) Filler plug
(A)
(A)
AT-07748

If you drain hot CVT fluid out and refill with "cold" CVT fluid you have overfilled the CVT. Hence, the need to have it at 95 - 113 degrees.

 

I know this is old, but, yes, it is the same.

BUT, note that if your OB has a radiator style cooler in front of the AC heat exchanger (aka: AC "radiator"), then take special care to double check the fill by repeating the process, or do an initial fill that closely matches how much you drained, as the fill procedure, due to filling the lines and radiator, may cause it to overflow out of the overflow port/hole when it's not actually full.

In the Ascent world, I've followed a few drain and fills where that has happened causing the CVT to be a couple of quarts low. Same applies to the Gen 6 OB Turbos with coolers.

 

wouldn’t the fluid increase with temperature?

 

Yes. Hence the risk of overfilling with "cold" fluid.

 

Followiing: Also in need of a guide for future CVT change on my 2020

 

If you have the XT the transmission is different. The fluid is not as readily available in quantities small enough to make it worth your time and trouble. But I found it fairly easy to change on My Ascent that had the same transmission.

Step 1. Make appointment with dealer and find out how much it costs, also try to get a loaner car lined up
Step 2. Leave your car at the dealer and take loaner car
Step 3. When done return loaner car
Step 4. Pay the dealer and get your car back

 

I'll add my $0.02 to the discussion. I have a '24 OBW with just under 10k miles. Decided to complete CVT drain/fill to (a) remove any suspended particles from a new CVT; (b) gain experience; (c) satisfy my curiosity about condition of CVTF at 10k miles.

Results: (1) Drained approx. 5.5 quarts (just over 5 liters) of fluid, so I replaced about 42% of original fill. (2) CVTF LV was used as per specification. Replaced crush washer on drain and flat washer on fill. (3) Shifting "seems" a wee bit smoother, though this may be me wanting an improvement. (4) Removed fluid was nearly identical in color and transparency (light yellow, like honey) to new, and I saw no metal deposits anywhere.

Conclusions: (A) the drain/fill process is straightforward, and is a tad bit more complicated than an oil change. (B) After seeing fluid condition at 10k miles, I'm happy to wait until 30k for next change.

Useful Data: Subaru P/Ns for TR690 CVT
drain plug/gasket: 32013AA080/809326090
overflow plug/gasket: 807016160/803916100
Torques: Drain: 39.2 Nm; Overflow 50 Nm

Hope this helps.

 

Do you happen to have a picture of the fill port for the transmission?

 

Not sure how you can be 2 qts off when doing this by the steps listed. Vehicle needs to be running when filling. Use a container that can fit under underneath the vehicle that has graduated markers to properly measure the fluid drained. I found these at Farm and Fleet. Let it sit until the same temperature as the new fluid and mark the level. Dump the old fluid, clean the container and fill to marked level with new fluid per the steps noted on re-fill.

I know this is old, but, yes, it is the same.

BUT, note that if your OB has a radiator style cooler in front of the AC heat exchanger (aka: AC "radiator"), then take special care to double check the fill by repeating the process, or do an initial fill that closely matches how much you drained, as the fill procedure, due to filling the lines and radiator, may cause it to overflow out of the overflow port/hole when it's not actually full.

In the Ascent world, I've followed a few drain and fills where that has happened causing the CVT to be a couple of quarts low. Same applies to the Gen 6 OB Turbos with coolers.

Doesn’t cold oil have less volume than hot oil?

 

Not sure how you can be 2 qts off when doing this by the steps listed. Vehicle needs to be running when filling. Use a container that can fit under underneath the vehicle that has graduated markers to properly measure the fluid drained. I found these at Farm and Fleet. Let it sit until the same temperature as the new fluid and mark the level. Dump the old fluid, clean the container and fill to marked level with new fluid per the steps noted on re-fill.


Doesn’t cold oil have less volume than hot oil?

I think you misunderstood. I've seen FA24F based Subies underfilled, because they don't take enough time for the cooling lines and front cooler to fill. People have filled till it starts overflowing, but the cooling lines and cooler havent filled all the way and they end up being short. Some people cap the overflow and run it a few and check again. One guy measured and put a little less in than he took out, and THEN followed the procedure to fill the rest of the way, leaving the plug in until it was nearly at temp.

 

See attached. Top picture is fill/level check (allen head bolt), and drain is bottom pic (looks exactly like the oil drain plug). You can also look at this video. It is an Ascent, but the same TR690 Xmission as the FA24DIT on the Outback:

Thank you so much! Exactly what I needed.

NO!!!!!!!!

That guy is an Amsoil shill that already destroyed his transmission AND filled it wrong because he has NO idea what he's doing.

He's his my conversation with him, but I went into detail about this, including sharing Amsoil admitting their fluid isn't compatible and parts of my conversation with that shill that he hid on YouTube.

I explain how to do it in my posts over in the ascent forum, or, you can get a 3-day membership to Subaru technical information system and learn how to do it from there. But whatever you do, do not follow his instructions.

 

I am NOT ADVOCATING AMSOIL. I was linking to this to highlight location of drain and fill/level check. Context is everything!

 

No plans to use Amsoil. I bought Valvoline CVT which is spec for the high torque CVT. Also purchased service manual after asking this question. What the Amsoil guy was doing made no sense to me. What good is it to only drain 4 qts?

 

Don't use Valvoline either. Stick with Genuine Subaru. WHy? These other solutions are one size fits many, and the Subaru CVT trannies are quite finicky. You will likely have poor performance and perhaps do damage that won't appear for several 1000s of miles. I know it is expensive, but it is still much cheaper than a new trans.

 

The attached PDF might help some - list of Automatic Transmission Fluid Application Guide for Subaru models; 2000-2025

 

That chart has no data for 2025 Outback XT.

 

Looks like this one is an updated version - updated April 2025

Hope this helps