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2018 Forester
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7 Posts
Discussion Starter · #1 ·
2018 forester 2.5 have installed 3 qt 75-90 ,still no drip from hole labeled check. How much oil does this differential require, owners manual says 1.3 qts.
 

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2018 Forester
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7 Posts
Discussion Starter · #3 ·
@Cddelta No , used t-70 tool, drained a little less than 1 qt. removed check plug then removed plug app. 5 inches above it added some oil and it began to come out drain hole. installed drain plug with t-70 tool. Have added 3 quarts oil and no drip from check hole. Am a little confused. Maybe you have an answer for me. Tks
 

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2015 Forester 2.5i Limited CVT
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1,487 Posts
Is the car level? Are you sure about the check plug? I’m assuming this is the front diff?
go to YouTube. There’s a video.
See

See

 

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2018 Forester
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Discussion Starter · #5 ·
@Theseus161 What you called overflow is cast into differential as check. Fill plug I used is directly above check app. 5 inches.. i am ready for bed but will look at differential tomorrow , you video seem to show fill on rt side of differential . I only observed differential from left side. Tks
 

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2015 Forester 2.5i Limited CVT
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1,487 Posts
Diff is on front right/passenger . If you opened the left side, you may have drained CVt f. Do not start your car just yet. Please see link below. Fill plug is right above axle. Hex plug.
see

 

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2019 Crosstrek 2018 Forester XT
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14,779 Posts
Since you have an XT..read this. You added oil to the wrong hole (I think)

This is a different generation so who knows.
 

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2012 Forester X Auto
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2,476 Posts
Eeek!
Unless there is a micro black hole or a lube eating ghost in your diff, adding more than the volume it can hold is impossible.
Barring the first two unlikely scenarios, you probably created a problem that will become exponentially worse should you try to move the car.
As others said, you very likely added gear lube to your CVT.

If the car hasn't been run, you may be able to flush it out without too much damage, but once the gear lube starts making the rounds, you're screwed, and the CVT will fail.
It also won't be covered under a warranty.
Good luck.
 

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2019 Touring (54k miles 5/2021)
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97 Posts
Like everyone else has said, do not start your car!


This video is great at showing locations.

If I was in your situation and had added gear oil to
CVT, I would stop. You’ll want to have your car towed to a shop that can remove the cvt pan and flush all the oil out of your cvt, then start fresh with new cvt oil.
Another option, you could just drain your cvt and refill with cvt oil, then probably do a series of 3-4 drain and fills to get the majority of any remaining gear oil out of the car. Cvt fluid change is pretty time consuming. In any case, your next steps, whether it’s a drain and fill or transmission oil pan drop, are going to be costly.


Sent from my iPhone using Tapatalk
 

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2015 Forester 2.5i Limited CVT
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Unfortunately, this happens too often. Research the procedure first. There’s a lot of information here and on YouTube.
This is a costly mistake. Probably around $500 or more to fix. And, there is no way to get 100% of the diff fluid out, but doing another drain/fill in 5k miles should help.

How does this affect the warranty? Cvt
I wish the OP luck. It should be fine. You didn’t start the car.
 

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2018 Forester
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Discussion Starter · #14 ·
Actually, I found this page on Reddit. Seems like even Subaru techs make this mistake as well, and the procedure is to flush the cvt 2x.

https://www.reddit.com/r/XVcrosstrek/comments/dcll5i

Sent from my iPhone using Tapatalk
Guilty—have driven car app 75 miles. Just drained cvt , now what , don’t know how to contact v1rotate on Reddit to see how his car did with his drain procedure. Car had no strange noise or acted abnormal . I assume at this point I should fill cvt with fluid to correct level, drive maybe 5 miles and let cvt cycle thru all gears , drain and repeat 2 more times. Am open to comments Tks.
 

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2019 Touring (54k miles 5/2021)
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97 Posts
I believe the CVT holds about 8-12 quarts total. A drain and fill only replaces approximately 4 quarts. If it was my car, I would:

1) Drain and fill CVT

Run the car, shift through gears -forward/neutral/reverse

2) drain and fill cvt a 2nd time

Run the car, shift through gears -forward/neutral/reverse

3) Drain and fill CVT a 3rd time.

Ultimately, you’re never going to get all the gear oil out of the CVT by doing drain and fills.

Potentially, you can ask the dealer or specialized transmission shop if they can flush the entire cvt, which includes removing the oil pan. That might ultimately be the least expensive option. You can maybe talk to a dealer, but call from a different number/name so they can’t track your car if they talk about it voiding warranty, etc.
 

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2018 Forester
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Discussion Starter · #16 ·
@Cddelta Am 78 ,have always done my own maintenance except wheel alignment. and I mean everything. Which is why I misread fill point on differential cause that casting is bolted to x-mission, sort of tried to get onto on this site for info ,also this is first time interacting with anyone on internet. I see no reason I can’t drop x-mission pan also. Is this a consideration—-drop pan spray parts cleaner in pressurized pump sprayer into all exposed area of body ,let air compressor spray air 15-20 minutes to dry , replace pan fill cycle thru gears, repeat 1 more time. On the 3 pan drop only spray air replace pan ,then hope for the best. BEFORE I do this will call a shop to inquire as to what they do and price. There is a lot of people who blow smoke, that is frustrating. Value what you have to say. Info was there but I FAILED to recognize it — MY MISTAKE!
 

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2015 Forester 2.5i Limited CVT
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1,487 Posts
Did you ever fill the gear oil? You may want to finish that first. A dry diff will cause issues also.
Try to find an independent Subaru specialist and ask about a complete cvt flush. It can be done through cvt oil cooler hoses.

Make sure they use the correct Cvtf fluid for your MY vehicle. Buy 12 quarts? Have it towed.
 

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2015 Forester 2.5 Premium CVT
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1,424 Posts
@Fodder

You're not much older than I am. One of my few philosophies in life is that, regardless of how smart and knowledgeable each person is, he/she will continue to screw up until the day they die. (Using my own life as a template.)

Good luck with this. I'm glad you caught your mistake.

Mike
 

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2018 Forester
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Discussion Starter · #19 ·
Did you ever fill the gear oil? You may want to finish that first. A dry diff will cause issues also.
Try to find an independent Subaru specialist and ask about a complete cvt flush. It can be done through cvt oil cooler hoses.

Make sure they use the correct Cvtf fluid for your MY vehicle. Buy 12 quarts? Have it towed.
Sir- found on line diy. Install long tubing into fill port on x-mission with long funnel on top, disconnect oil cooler discharge hose from x-mission to oil cooler radiator. Will verify but should be lower hose,put bucket to catch oil. Open caps on 13 qts of oil placed next to funnel, start eng ,keep funnel full , when all 13 qts go thru x-mission stop eng. Check oil level.will do this 2 times.will use valvoline . Will drive couple miles between these 2 changes. So that basically will be 40 qts oil! Maybe an expensive lesson learned. Yes will service fwd differential before I drive. And to you Mike sooo true but then life would be boring. NOT thank you guys!
 

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Sahuarita, AZ 2018 Forester Limited
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2,814 Posts
I would take it to a shop that is familiar with flushing by removing the CVTF lines to the transmission cooler. That type of flush will get most of the contaminated CVTF out. Here's a DIY video:
 
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