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2020 Onyx
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Discussion Starter · #1 · (Edited)
So today I received the F108N and along with the F105N I planned to change my oil, filter, and install whichever Fumoto valve had the correct thread size.

Looking under the car, I was surprised that there wasn't more plastic undercladding. The oil pan is exposed, nestled between exhaust and sway bar. Notably it's very deep where the drain plug goes, so it's great that it's not a big flat pan. It should drain well.

476192


14mm Drain plug, was pretty tight. (NOTE - I did not have this problem but several owners have rounded their drain plugs. Only use a 6 point socket for removal) After removing it, it appears that the inside of the pan was painted while the drain plug was in. It shows what parts of the thread are actually in the pan and where it's only in the oil. The thread matches the F108 and the F108's threads are short enough that it will not cause excess oil to remain in the oil pan. We can put that concern aside.

476193


Ok, time to install the F108N but oh no! It won't rotate! The exhaust heat shield prevents the valve body from rotating and letting me screw the whole thing in. Oh well. I'm not prepared to remove the exhaust heat shield today just for the sake of the Fumoto valve. OEM plug put back in. Will consider whether removing exhaust heat shield or trying the F108SX makes more sense at the next oil change. At least F105 in any variant is definitively ruled out no matter what specs say on the web, for the 2020 Outback 2.4 XT

476194


476195


OK put in the Wix 57055XP (27psi bypass valve) and new full synthetic 0w-20 SN-Plus Dexos 1 gen 2 oil in using the special funnel.

Additional notes:

Oil level was at least half a quart high from the dealer. After 675 miles, oil level doesn't appear any higher or lower.

With both engines off overnight, compared the smell of a 2009 Honda Fit's several thousand miles old oil, and the 2020 Outback's 675 mile old oil.

Both had some gasoline smell, but nothing alarming, with the Fit oil smelling more "used engine oil" smell. It was quite dark. The Outback's oil was still light brown on the dipstick. Changed it anyways for the sake of identifying the correct Fumoto valve. When in the drain pan, the Outback's oil didn't look so golden. It was surprisingly dirty looking. Oh well. Not sending in a sample for analysis. F105N has wrong thread. F108N does not fit - will not screw in.

Next step will be to buy the F108SX and try again at the end of January, or maybe consider removing exhaust heat shield to salvage the F108N. If I could screw it all the way in, it would fit. Only question would be where the valve control would end up. There's not much space there for it to be accessible unless it's in the right position. Makes the F108SX seem very promising.
 

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2020 Outback Limited XT. 2.4L Turbo, CVT, Popular Package #2, Abyss Blue Pearl / Black Leather
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What's the deal with that special funnel?

From the picture it looks like the exhaust shield could be lightly filed and create enough room to install the valve. Is that an optical illusion?
 

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2020 Onyx
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Discussion Starter · #3 · (Edited)
What's the deal with that special funnel?

From the picture it looks like the exhaust shield could be lightly filed and create enough room to install the valve. Is that an optical illusion?
The funnel just screws into the oil filler threads to make things tidy and easy. There are at least two versions sold on Amazon that seem like they're from the same factory under different names.


Yes the heat shield could be nibbled or filed to make enough room, but I didn't want to hassle with that right now. The interference was maybe a 1/4" overlap. If it had been 1/8 I would have just bent it back with pliers or something. It could still be done, but depending on where the F108 ends up with it's fully screwed in, the valve body might be inconvenient to use since it's so tight.

The F108SX looks like a guaranteed fit and the benefit is that it can be rotated so that the control and nozzle are facing where you want. F108SX: Position Adjustable Oil Drain Valve with M16-1.5
 

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2020 Outback Limited XT. 2.4L Turbo, CVT, Popular Package #2, Abyss Blue Pearl / Black Leather
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That SX looks like it's the bomb! I've had Fumoto valves on all my trucks and my son's truck too, love their convenience. I haven't decided if I'm going to do oil changes or take it to the dealer yet. If I end up doing them I'm sure I'll end up with that 108SX on my OB. :cool:
 

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Discussion Starter · #5 ·
That SX looks like it's the bomb! I've had Fumoto valves on all my trucks and my son's truck too, love their convenience. I haven't decided if I'm going to do oil changes or take it to the dealer yet. If I end up doing them I'm sure I'll end up with that 108SX on my OB. :cool:
I just ordered the F108SX and one of those plastic nipple things so I can attach a hose to it after installation. I can't justify changing the oil the moment it arrives, so I won't be putting it in until at least the end of January. Hopefully someone else contemplating Fumoto use will be able to verify and document the SX fitment before then.
 

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2020 Outback Limited XT Black on Ivory
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Thanks for blazing this trail for us, Silver. You likely just saved a lot of folks from buying the wrong valve.
Initially I was thinking that maybe an extension would work but that would just add another potential leak point and lower the valve for higher potential to hang up.
I think your right, the third time will be the charm with the SX.
p.s. Great detail as always!
 

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2020 Onyx
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Discussion Starter · #8 ·
I had expected it to look like the Ascent, with large plastic undercladding with just an opening for draining the oil, or a plastic oil drain door found in other Subarus. With so little undercladding under the car, it didn't seem as if there were obvious unused mounting points, but I thought there was a chance someone would chime in and say "hey I have undercladding there".

Thinking that maybe the aluminum undertray covers more, I looked at the instructions for mounting it, which requires drilling holes.



It confirms that the original undercladding is just the way mine is, and surprisingly, the aluminum one doesn't replace the plastic one, but fits over the plastic one and only covers the central part of it.

https://subaruonlineparts.com/docs/E515SAN000.pdf
 

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2020 Onyx XT White
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So today I received the F108N and along with the F105N I planned to change my oil, filter, and install whichever Fumoto valve had the correct thread size.

Looking under the car, I was surprised that there wasn't more plastic undercladding. The oil pan is exposed, nestled between exhaust and sway bar. Notably it's very deep where the drain plug goes, so it's great that it's not a big flat pan. It should drain well.

View attachment 476192

14mm Drain plug, was pretty tight. After removing it, it appears that the inside of the pan was painted while the drain plug was in. It shows what parts of the thread are actually in the pan and where it's only in the oil. The thread matches the F108 and the F108's threads are short enough that it will not cause excess oil to remain in the oil pan. We can put that concern aside.

View attachment 476193

Ok, time to install the F108N but oh no! It won't rotate! The exhaust heat shield prevents the valve body from rotating and letting me screw the whole thing in. Oh well. I'm not prepared to remove the exhaust heat shield today just for the sake of the Fumoto valve. OEM plug put back in. Will consider whether removing exhaust heat shield or trying the F108SX makes more sense at the next oil change. At least F105 in any variant is definitively ruled out no matter what specs say on the web, for the 2020 Outback 2.4 XT

View attachment 476194

View attachment 476195

OK put in the Wix 57055XP (27psi bypass valve) and new full synthetic 0w-20 SN-Plus Dexos 1 gen 2 oil in using the special funnel.

Additional notes:

Oil level was at least half a quart high from the dealer. After 675 miles, oil level doesn't appear any higher or lower.

With both engines off overnight, compared the smell of a 2009 Honda Fit's several thousand miles old oil, and the 2020 Outback's 675 mile old oil.

Both had some gasoline smell, but nothing alarming, with the Fit oil smelling more "used engine oil" smell. It was quite dark. The Outback's oil was still light brown on the dipstick. Changed it anyways for the sake of identifying the correct Fumoto valve. When in the drain pan, the Outback's oil didn't look so golden. It was surprisingly dirty looking. Oh well. Not sending in a sample for analysis. F105N has wrong thread. F108N does not fit - will not screw in.

Next step will be to buy the F108SX and try again at the end of January, or maybe consider removing exhaust heat shield to salvage the F108N. If I could screw it all the way in, it would fit. Only question would be where the valve control would end up. There's not much space there for it to be accessible unless it's in the right position. Makes the F108SX seem very promising.
ZX:

Great write-up! Thanks for posting.
 

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I had expected it to look like the Ascent, with large plastic undercladding with just an opening for draining the oil, or a plastic oil drain door found in other Subarus. With so little undercladding under the car, it didn't seem as if there were obvious unused mounting points, but I thought there was a chance someone would chime in and say "hey I have undercladding there".

Thinking that maybe the aluminum undertray covers more, I looked at the instructions for mounting it, which requires drilling holes.



It confirms that the original undercladding is just the way mine is, and surprisingly, the aluminum one doesn't replace the plastic one, but fits over the plastic one and only covers the central part of it.

https://subaruonlineparts.com/docs/E515SAN000.pdf
yep. The XT has a "front cover - under guard" which is that metal bracket underneath the factory plastic one... where the 2.5 does not have that metal bracket. So you install the aluminum plate over the steel guard that is there.

The steel one can be installed in the XT, but the aluminum one would need other parts to be installed on a 2.5
 

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2020 Onyx
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Discussion Starter · #11 ·
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that funnel you got there is pretty nifty looking. I use an older funnel I've had that's older that some people on the forum here... but it isn't threaded and can move. If you were really thrifty, and wanted a threaded funnel (that screws in and fits and holds itself in place), you could do something like this, just cut the bottom of the container off:

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That one has a thicker plastic than a 2 liter cocacola container (as an example)

Other containers have the same threads on them - some deeper than others. The gallon size jugs (like some ammonia, bleach, etc) are too wide and may not fit depending on application. All these would work (the vegetable juice one might hit a 3.6R cover)... the powerade and containers like that are a bit thinner than that bai whatever thing is

476253
 

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2020 Subaru Outback Limited
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51 Posts
Great write up @SilverOnyx so thanks for that!

As far as the funnel goes are we really that concerned about spending the exorbitant sum of $15 on the perfect tool for adding oil to the car? My time is worth far more to me then saving virtually nothing while spending time doing it.
 

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2020 Onyx
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Discussion Starter · #17 ·
Great write up @SilverOnyx so thanks for that!

As far as the funnel goes are we really that concerned about spending the exorbitant sum of $15 on the perfect tool for adding oil to the car? My time is worth far more to me then saving virtually nothing while spending time doing it.
People are just playing around.... I love my special funnel though. I think about doing oil changes just to have a chance to use it!
 
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