Poor little CVT! Change your fluid!

Update:

The Lancer is at 257,000kms, and the CVT is running like a top. I took it for a good run and there are no symptoms/signs of any CVT related issues thus far and it drives exactly how I would expect a new sport CVT to behave (car has paddle shifters, so got to test it good). I'll do another dump and fill with him in the spring and we'll change the CVT fluid filter at the same time.

I put a sticker in his window for his birthday to get an oil change, which is today. He was over for Canadian Thanksgiving and we gave the old Lancer a treat of SI1, oil change with Super Tech 5w30 and a Fram PH7317.

We dumped the Super Tech 5w30 oil and Super Tech MP7317 that we put on there in the spring. I cut the oil filter open and I'll post it. I was impressed with the quality build of that SuperTech filter.
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When did becoming dad included servicing ur daughter’s car and now ur daughter’s BF car? It never ends. Lol
Better in the driveway/garage then on the side of the highway or in-laws asking for a loan cosign. I'm not a fan of road rescues, but I'll do them if absolutely necessary, of course. I'd much rather prevent them if at all possible. Plus, while one car is draining fluid, you can be working on "the other one". Fluid transfusions are the least of my troubles and barely require effort. I just tell them what fluid to get and where to buy it.
 
Daughter’s boyfriend is over and as he pulls into the neighborhood I hear this screech, like someone is killing robot babies off in the distance.

It gets louder and louder and as a car turns onto our street I can hear it in stereo. Like a high pitched turbo sound revving up and down.

Boyfriend pulls up and says “somethings not right, it’s slipping and making weird noises”.

That poor CVT. 2012 Lancer with 2.4 Mivec has 245,000 kms, could be original fluid. Kid bought the car for cheap couple years ago.

I pull the transmission dipstick it has a terrible smell. Like burnt plastic…

I offer to dump and fill his CVT a couple of times and see if it settles down.

I pull the plug and some pretty nasty fluid comes out and the smell is awful. I can’t imagine this transmission tolerating much more abuse!

I dump it first time and it drops 3.5 litres. I add 3.5 litres and take it for a drive. First takeoff it screeches… then stops within 10 seconds! I drive it for 10-15 kms and noticed the sound only when I’m on the throttle at speed, but it’s low and not very noticeable.

I drop the fluid a second time, same smell, ugly, but better than first.. barely.

Taken it for another drive and another big improvement. Really grabs on takeoffs, high load at speed grips, no slipping.

I decide to drop the fluid one more time and it drives like new again. He’s so grateful and says “drives better than it ever has”.

… other than those endlinks and bushings, but yeah. Drives great 😎

Put 10.5 litres of Transmax ATF/CVT through it and we did an oil and filter change with Super Tech 5w30 and Super Tech7317.

Kid is over the moon and he learned something.
View attachment 278539
 
Daughter’s boyfriend is over and as he pulls into the neighborhood I hear this screech, like someone is killing robot babies off in the distance.

It gets louder and louder and as a car turns onto our street I can hear it in stereo. Like a high pitched turbo sound revving up and down.

Boyfriend pulls up and says “somethings not right, it’s slipping and making weird noises”.

That poor CVT. 2012 Lancer with 2.4 Mivec has 245,000 kms, could be original fluid. Kid bought the car for cheap couple years ago.

I pull the transmission dipstick it has a terrible smell. Like burnt plastic…

I offer to dump and fill his CVT a couple of times and see if it settles down.

I pull the plug and some pretty nasty fluid comes out and the smell is awful. I can’t imagine this transmission tolerating much more abuse!

I dump it first time and it drops 3.5 litres. I add 3.5 litres and take it for a drive. First takeoff it screeches… then stops within 10 seconds! I drive it for 10-15 kms and noticed the sound only when I’m on the throttle at speed, but it’s low and not very noticeable.

I drop the fluid a second time, same smell, ugly, but better than first.. barely.

Taken it for another drive and another big improvement. Really grabs on takeoffs, high load at speed grips, no slipping.

I decide to drop the fluid one more time and it drives like new again. He’s so grateful and says “drives better than it ever has”.

… other than those endlinks and bushings, but yeah. Drives great 😎

Put 10.5 litres of Transmax ATF/CVT through it and we did an oil and filter change with Super Tech 5w30 and Super Tech7317.

Kid is over the moon and he learned something.
View attachment 278539View attachment 278540
2020 Nissan Altima SL purchased with 30k miles for my wife. Requested that the dealer swap the transmission fluid before pick-up and the agreed.
This is our first CVT transmission and I have hated it since day one.
My wife doesn't care either way. She thinks it's fine, but her car knowledge goes as far as putting gas in and driving it.
To me, the transmission feels "mushy" and terribly slow to respond, especially when accelerating from 20/30mph to highway speeds.
Altima recently hit 60k miles, so I did a transmission fluid swap. Pan drains 3 1/2 quarts, refilled with the same. I had my wife drive to work the next day (20-mile round trip) and completed another 3 1/2-quart swap and took a test drive.
OMG, what a difference!!! It feels like a new or different car!
No more "mushy" feeling, great grab off the line, and accelerating from 20/30mph to highway speeds feels like a different car.
I really can't get over the difference swapping the fluid made.
Not sure if the dealer just didn't do the change, or put a "universal" transmission fluid in. My guess is they didn't put the correct NS3 fluid in seeing that until recently NS3 fluid was almost $25 a quart for Nissan NS3 fluid and the fluid wasn't burned.
Now there are several manufacturers of actual NS3 fluid. Not fluid labeled "compatible" with NS3 fluid. Hell, DOT3 would be compatible with NS3. Compatible means it's not actually NS3 fluid.
The other NS3 manufacturers are; Triax, Mannol, and Idemitsu.
Always trusted Triax oils so I used Triax NS3. Got 2- 5 quart jugs for $90. ($9 qt compared to Nissan NS3 @ $25qt) I wish Triax motor oil wasn't so expensive as it is a much better oil than Mobil 1 synthetic.
There seems to be lots of debating on CVT fluid flushes and I agree.
I would not flush a CVT, especially a Jatco CVT.
First of all, it would take at least 12 quarts of fluid before it ran clean, and I'd be afraid of dislodging any metal flakes. A drain & fill just refreshes the NS3 fluid, and replenishes the anti-slip properties that is so important in a CVT.
Seeing as the Altima Jatco CVT hold nearly 8 quarts I plan on doing a 3 1/2 quart drain & fill every 10k miles this way I am keeping up with the 30k mile maintenance.
I'm sure some will say that is over-kill, and I would agree if it were anything but a Jatco transmission.
The cost of replacing that specific CVT is $3500 for a re-man, and up to $6k for a new CVT if one can be found, never mind the hassle of a break-down while my wife is driving, and the down time involved. I usually do all car work myself, but the newer cars require Hi-Tech troubleshooting equipment that I don't have. That is why I keep my old 2000 Chevy S-10 with 200k miles and still runs like a top, no rot at all, and doesn't burn any oil at all.
My comfort car is a 2007 Chevy Malibu LTZ with all the bells & whistles, that just hit 100k. Fairly simple car to fix, dependable 3.5-liter V6.
New cars are like how we live these days...everything is disposable.
I will stick with my old-reliables!!
 
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2020 Nissan Altima SL purchased with 30k miles for my wife. Requested that the dealer swap the transmission fluid before pick-up and the agreed.
This is our first CVT transmission and I have hated it since day one.
My wife doesn't care either way. She thinks it's fine, but her car knowledge goes as far as putting gas in and driving it.
To me, the transmission feels "mushy" and terribly slow to respond, especially when accelerating from 20/30mph to highway speeds.
Altima recently hit 60k miles, so I did a transmission fluid swap. Pan drains 3 1/2 quarts, refilled with the same. I had my wife drive to work the next day (20-mile round trip) and completed another 3 1/2-quart swap and took a test drive.
OMG, what a difference!!! It feels like a new or different car!
No more "mushy" feeling, great grab off the line, and accelerating from 20/30mph to highway speeds feels like a different car.
I really can't get over the difference swapping the fluid made.
Not sure if the dealer just didn't do the change, or put a "universal" transmission fluid in. My guess is they didn't put the correct NS3 fluid in seeing that until recently NS3 fluid was almost $25 a quart for Nissan NS3 fluid and the fluid wasn't burned.
Now there are several manufacturers of actual NS3 fluid. Not fluid labeled "compatible" with NS3 fluid. Hell, DOT3 would be compatible with NS3. Compatible means it's not actually NS3 fluid.
The other NS3 manufacturers are; Triax, Mannol, and Idemitsu.
Always trusted Triax oils so I used Triax NS3. Got 2- 5 quart jugs for $90. ($9 qt compared to Nissan NS3 @ $25qt) I wish Triax motor oil wasn't so expensive as it is a much better oil than Mobil 1 synthetic.
There seems to be lots of debating on CVT fluid flushes and I agree.
I would not flush a CVT, especially a Jatco CVT.
First of all, it would take at least 12 quarts of fluid before it ran clean, and I'd be afraid of dislodging any metal flakes. A drain & fill just refreshes the NS3 fluid, and replenishes the anti-slip properties that is so important in a CVT.
Seeing as the Altima Jatco CVT hold nearly 8 quarts I plan on doing a 3 1/2 quart drain & fill every 10k miles this way I am keeping up with the 30k mile maintenance.
I'm sure some will say that is over-kill, and I would agree if it were anything but a Jatco transmission.
The cost of replacing that specific CVT is $3500 for a re-man, and up to $6k for a new CVT if one can be found, never mind the hassle of a break-down while my wife is driving, and the down time involved. I usually do all car work myself, but the newer cars require Hi-Tech troubleshooting equipment that I don't have. That is why I keep my old 2000 Chevy S-10 with 200k miles and still runs like a top, no rot at all, and doesn't burn any oil at all.
My comfort car is a 2007 Chevy Malibu LTZ with all the bells & whistles, that just hit 100k. Fairly simple car to fix, dependable 3.5-liter V6.
New cars are like how we live these days...everything is disposable.
I will stick with my old-reliables!!
Crystal clean fluid is the lifeblood of these CVTs. Go ahead and flush them!

https://share.evernote.com/note/3957b040-bb5f-4c06-3b87-203ded337ef0
 
Update:

I get home from work and the Lancer is in my driveway with CVT oil on the ground.... I check the dipstick and it's got a tiny dab of Transmax on the dipstick left :unsure:

Looks like my daughter drove him to work due to the car dropping "some fluid the last couple of days".

I raise the car, have a looksy and immediately find the culprit. A failed CVT transmission cooler/radiator.

No idea how long he drove with that low fluid, but that CVT is impressing me with the perpetual beating it's getting.

New cooler, lines, clamps and Transmax on the way! A couple hundred in parts and it'll be up and running again.

The drama continues and the kid is learning a lot.
 
Crystal clean fluid is the lifeblood of these CVTs. Go ahead and flush them!

https://share.evernote.com/note/3957b040-bb5f-4c06-3b87-203ded337ef0
My 2012 Altima just crossed over 190,000 miles. Drain and fill every 30K since I bought it at 20,000 miles. Whining after hard driving early in my ownership tipped me off that the fluid needed changing. Since then I've stuck with that interval, but never babied it. I actually have the dealership handle the service, but I pulled the dipstick the other day and was surprised at how clear the fluid was with 20,000 miles on the current interval.
 
PB blaster'd all the bolts holding the cooler in place. Three bolts, should be really easy to remove. Cooler line clamps are easy access, simple on/off.

I've ordered a transmission filter and gaskets since I'll be right there. Might as well pull the original filter out. I'll share pics of that filter once all is done.

Parts on order.

I bet this would have been thousands at the dealer. Simple cooler/radiator rot.

The good news is the CVT will get fresh Transmax once it's all done.
 
2020 Nissan Altima SL purchased with 30k miles for my wife. Requested that the dealer swap the transmission fluid before pick-up and the agreed.
This is our first CVT transmission and I have hated it since day one.

First of all, it would take at least 12 quarts of fluid before it ran clean, and I'd be afraid of dislodging any metal flakes. A drain & fill just refreshes the NS3 fluid, and replenishes the anti-slip properties that is so important in a CVT.
Seeing as the Altima Jatco CVT hold nearly 8 quarts I plan on doing a 3 1/2 quart drain & fill every 10k miles this way I am keeping up with the 30k mile maintenance.
The dealer didn't change the fluid. They won't touch CVT fluid.

I think every 10-20K is reasonable. Especially with how easy it is to do a drain/fill on these. If you don't mind spending the money for the fluid it certainly won't hurt
 
All done, and the CVT is running great again!

The leak was coming from the connectors off the cooler... they had cracked at the base. Took some wizardry with a flat screwdriver to get them out of the cooler lines since they broke off inside the lines. There was a lot of corrosion that needed to be pryed through with some PB Blaster until I could finally spin the broken aluminum connectors and gently rotate them out out of each line.

One of the hanger bracket screws cracked right off, like right out of a meme :oops: Considering I've run zip ties on my dual sports across the territories off road to the Arctic, it's good enough for a 2012 Lancer hanger bracket.. to be fair the bracket has a solid ridge that the cooler tab sits on. The zip tie pulls it flush with the bracket so it doesn't skip off the ridge. :cool:

Test drive went perfectly, behaving as expected with lots of grip on downshift/upshift tests.

Added just over a gallon to get it at the right level. Dipstick is a bright Castrol Transmax red. I didn't bother with the filter or pan/gasket. I figured leave well enough along now that it's running again.
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