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Old 01-03-2013, 06:32 PM   #26
Mo_The_Car_Guy
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Default CVT Over heating

After 1500 miles on clock I decided to take the car for a long journey, then on the way home I felt like doing a bit over 100 mph so I reached 112 mph, but after about 2 mins the AT OIL TEMP warning light came on, the safest top speed of the car as recommended by the manual is 122 mph, so how can something like that happen? what can I do to stop it? Does it really need a new pressure switch? or an oil change can fix it?
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Old 01-03-2013, 07:08 PM   #27
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Quote:
Originally Posted by Mo_The_Car_Guy View Post
After 1500 miles on clock I decided to take the car for a long journey, then on the way home I felt like doing a bit over 100 mph so I reached 112 mph, but after about 2 mins the AT OIL TEMP warning light came on, the safest top speed of the car as recommended by the manual is 122 mph, so how can something like that happen? what can I do to stop it? Does it really need a new pressure switch? or an oil change can fix it?
Where in the world were you able to drive at 112 mph for 2 entire minutes?

Das Impreza, Autobahn warrior.
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Old 01-03-2013, 07:45 PM   #28
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Regardless of where he lives, I dont think I would break 70 mph let along 112 mph with only 1500 miles on the car. That's just asking for trouble.
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Old 01-04-2013, 01:23 AM   #29
Mo_The_Car_Guy
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Originally Posted by Angelus911 View Post
Regardless of where he lives, I dont think I would break 70 mph let along 112 mph with only 1500 miles on the car. That's just asking for trouble.
You mean it's just because the car is still new? Do I have to wait a bit to be able to do this kind of driving? But this is not the first CVT equipped car I've owned, I owned a Mitsubishi Lancer and went over these speeds without any trouble at all and at the first 1500 miles.
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Old 01-04-2013, 07:35 AM   #30
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Originally Posted by Angelus911 View Post
Regardless of where he lives, I dont think I would break 70 mph let along 112 mph with only 1500 miles on the car. That's just asking for trouble.
Subaru is one of very few manufacturers that even mention "break in" periods anymore. I don't know of *any* others myself, frankly.
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Old 01-04-2013, 10:37 AM   #31
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I guess it's because the CVTF can't withstand driving at these speeds because it can't handle the temp produced and if changed it'll all be fixed.
Please correct me if I'm wrong
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Old 01-04-2013, 11:41 AM   #32
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Originally Posted by Mo_The_Car_Guy View Post
I guess it's because the CVTF can't withstand driving at these speeds because it can't handle the temp produced and if changed it'll all be fixed.
Please correct me if I'm wrong
Could be. I know there are some aftermarket synthetics out there for the cvt, but Amsoil doesn't have one yet so I'll probably just wait. Also, if the new factory cvt fluid can't handle it I'm not sure anything else will, or maybe it's a wear-in process that's causing it.
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Old 01-04-2013, 12:24 PM   #33
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Originally Posted by stevehnm View Post
Could be. I know there are some aftermarket synthetics out there for the cvt, but Amsoil doesn't have one yet so I'll probably just wait. Also, if the new factory cvt fluid can't handle it I'm not sure anything else will, or maybe it's a wear-in process that's causing it.
Thank you for the reply, can I ask you to tell me more about the specs of the new factory cvt fluid? And if I'm not bothering can you explain what do you mean by "wear-in"?
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Old 01-05-2013, 03:03 PM   #34
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Still getting used to the CVT shift delay but at least it's not as disconcerting as Ford's DCT behavior.
Questions related to the CVT oil temp issue - first, can the fluid be drained and replaced? I admit to not reading up on this topic. Second, does Subaru have the transmission fluid sent to the radiator for temp. control like conventional automatic transmissions? Maybe a aftermarket transmission cooler can be added inline for improved fluid temp reduction at speed.
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Old 01-05-2013, 10:44 PM   #35
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I'm probably the only '12+ Impreza owner on this site that had the CVT fluid changed already (@ 10,500 mi). I don't know if any aftermarket fluid will be available anytime soon but the Subaru CVT fluid has a blue tint color and it's only sold in 5 gallon buckets for $270. The dealership charged me by the quart @ $14.00 x 9 qts.
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Old 01-05-2013, 11:33 PM   #36
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Originally Posted by Mo_The_Car_Guy View Post
Thank you for the reply, can I ask you to tell me more about the specs of the new factory cvt fluid? And if I'm not bothering can you explain what do you mean by "wear-in"?
I haven't really been into the cvt fluid. The best link I've found is here. I've also seen where fluid for cvt metal belts is different from fluid for cvt chains, like in the new Subaru cvt.

As far as "wear in" If you have ever looked at differential or other gears that have been sliding on each other for awhile there is an area (hopefully in the middle of the face) that is shiny. That's what I'm referring to as "wear in".

When a motor is slightly worn any restrictive areas are polished off as above, and tend to perform better. Engine parts are built to tolerances, and even if within the tolerance of individual parts, one part at one extreme and the facing part at the other extreme can cause extra friction. "Break in" is to start to wear those parts while they are so far off extreme use can cause a problem, rather than just be a friction point.

One spot on an engine is no big deal, but there are lots of parts in engines... Changing to a type IV synthetic before the engine surfaces are optimized to each other could extend the time before those surfaces mate. That's the way I understand it.
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Old 02-02-2013, 05:16 PM   #37
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Quote:
Originally Posted by CLL_OBP View Post
I'm probably the only '12+ Impreza owner on this site that had the CVT fluid changed already (@ 10,500 mi). I don't know if any aftermarket fluid will be available anytime soon but the Subaru CVT fluid has a blue tint color and it's only sold in 5 gallon buckets for $270. The dealership charged me by the quart @ $14.00 x 9 qts.
Why did you have your fluid changed? I don't think I buy the "for life" fluid life they advertise, but 10k miles? Did it help your shift delay any?
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Old 02-02-2013, 08:10 PM   #38
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he is probably as nutty as I am.
On auto transmissions I change fluid every 15k which is about a year and change
On MTL I do first change at 4k, then change every 10 to 15k after that.

Just my own personal preference.
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Old 02-02-2013, 08:34 PM   #39
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Agreed - and I am also pretty picky and change by the sever duty cycle.
However, since our new transmissions don't have dipsticks and are designed to not have fluid changes I fully intended to go quite a bit longer than my normal intervals - like 50k.
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Old 02-02-2013, 09:17 PM   #40
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Quote:
Originally Posted by orndog View Post
Why did you have your fluid changed? I don't think I buy the "for life" fluid life they advertise, but 10k miles? Did it help your shift delay any?
Quote:
Originally Posted by aeoporta View Post
he is probably as nutty as I am.
On auto transmissions I change fluid every 15k which is about a year and change
On MTL I do first change at 4k, then change every 10 to 15k after that.

Just my own personal preference.
I had it changed for the same reason others (including myself) changed their engine oil and differential fluid with under 2,000 miles: to get rid of the gunky factory fill. Since I did the oil and diff, I wasn't going to ignore the transmission. It was a good thing too 'cause the service tech showed me the fluid strainer and it had A LOT of metal shavings in it. He suggested I needed another strainer but I told him to at least try to wash that $hit out in the parts washer first and fortunately it came out fine.

To answer your question orndog, it didn't help with the shift delay but the drive felt noticeably smoother. No fluid is "for life" and to all the CVT owners, I STRONGLY recommend having the CVT fluid changed at some point in time and not just "inspect" as the service manual shows to do every 30K.

aeoporta, I think I'm a little nuttier. I used to drain/fill my Civic AT tranny fluid every 10K miles. $25 every 10K for 3 qts of Honda ATF-Z1 was just like an oil change. I didn't have too much confidence in Honda transmissions since my '02 Odyssey tranny had to be replaced after only 3 years in '05.
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Old 02-03-2013, 06:44 AM   #41
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Good points. Now what do they charge for the CVT service? did you do it at the dealer?
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Old 02-03-2013, 09:26 AM   #42
vspeeder
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Default ya same here

same here
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Old 02-03-2013, 09:30 AM   #43
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Quote:
Originally Posted by orndog View Post
Good points. Now what do they charge for the CVT service? did you do it at the dealer?
I had this done last August at the dealership and there wasn't a set price then. Everything w/ tax was $290-something. For now, the dealer is the only way and best way to get the CVT fluid and have it changed. They only sell it in a 5 gallon bucket for $270+tax = $290-something. It wasn't cost effective to do this myself. For the same price, the complete job can be done without having 11 remaining quarts of opened CVT fluid sitting on the shelf for the next several years getting stale.
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Old 02-15-2013, 07:17 AM   #44
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As an update, I spoke with a well known local Subaru shop here (not a dealer), they recommended a service at 60k unless I was towing.
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Old 02-16-2013, 02:49 PM   #45
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Quote:
Originally Posted by riccnick View Post
Just as a side note, I noticed today that when the weather is warmer (~45-50F) and the car is warmed up, the transmission shifts from gear to gear like a normal auto. Really no extended delay at all. Usually its been 3-4, maybe even a 5 second delay. But for some reason (probably because it heard me say I would take it in) today at lunch it was fine.
I've noticed the delay too, but as mentioned by someone else, I've gotten used to it and can now time when to put it in drive so that just as I come to a stop, it engages and off I go, so there's no "delay" really to speak of, and no extra stress on the drivetrain.

But really man...5 seconds??? Come on! Do you realize how long 5 seconds actually is?!?! That's a LONG time!!!!!!! Exaggerating much??
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Old 02-21-2013, 09:47 PM   #46
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A couple questions on the paddle shifters..

1) Will extensive use be detrimental to the CVT? I find the driving experience is definitely better when using them vs leaving it in drive.

2) What is the appropriate way of driving in this mode? Just leave your foot on the gas while bumping the gear up? I'm used to a normal manual transmission. lol

3) When I upshift it "lurches" or "lunges". Is this considered normal? I'd assume so, it's just not as smooth as normal drive. And I'm not talking a redline shift, but normal RPM..
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Old 09-20-2013, 12:13 AM   #47
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Angry Shift Delay - 2013 Impreza

We also have the delay in shifting, usually around 2 seconds. Worse when it's cold, better when it's warm. If I would have known about this problem, I would not have bought the car (2013 Impreza). We've had it for 6 months and still haven't gotten used to it.

I took it to the dealer, and they said on that day, it was taking 1.5 seconds. They said this was "normal" and nothing was wrong with the car.

I had a 2010 Outback with CVT that shifted great with no delay, so this isn't an issue with every Subaru CVT.

I think this will be my last Subaru due to this issue and the way the dealership and Subaru are handling it.
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Old 09-20-2013, 01:41 AM   #48
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My major issue with said delay is going into and out of reverse. IE, backing out of a parking spot, putting it into drive and waiiiiiiiiiiiit then go. WTF is it doing..?! lol I've been in Prius's that have less lag.
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Old 09-20-2013, 03:24 AM   #49
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Believe it or not, and I know 6 months seems like it must be long enough, this gets much better over time. Actually, I was amazed at how things seemed to ease up and smooth out - tight modern tolerances apparently - with the engine as well, but especially the trans. Mine's a '12 Impreza Ltd, now approaching 30,000 mi, and it shifts between drive and reverse in about 2 seconds, just about like any auto trans.But I'd say it didn't loosen up until 15 grand, maybe more - and yes, it had been slow as hell.
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Old 09-20-2013, 04:22 PM   #50
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Well that's good to hear.. I've driven many other CVT's and didn't notice as much of a delay as I have in mine.. I'm around 11k or so on my 13 Sport.. Only had it since January. haha
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