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Jeep Wrangler JL Transmission (850RE) Fluid Change Service, ZF8
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- เผยแพร่เมื่อ 7 ต.ค. 2021
- In this video I am changing the transmission fluid on a 2018 Jeep Wrangler JL. 8 speed 850re transmission.
Steps to check fluid level or refill:
Jeep needs to be on level ground.
Start Jeep - leave running throughout process
Transmission should be between 86* and 122* fahrenheit.
Shift to Reverse for 5 seconds
Shift to Drive for 5 seconds
Shift to Second Gear for 5 seconds
Place in Neutral
Raise RPM to 2,000 RPM"S for 5 seconds
Place in Park
Remove fill plug from passenger side of transmission
Fill until fluid is dripping out
Place fill plug back in and torque to 26 ft lbs.
Thank you very much for the info. I just got a 2021 JT and have wondered this very same thing.
Awesome video, thank you for educating us newbies.
Thank you! I’m pretty mechanically inclined as far as brakes, oil changes, plugs etc. once I heard the dealer by me wanted $1200 for this couldn’t believe it. Thanks to your video I’m gonna do it myself and it definitely doesn’t look too difficult.
Thank you for this, I have a 2020 JT with 50,345 miles zero wining. Time to change fluid. Dealer said drop it off at 2 pm would be done by 5 pm. I don’t trust them !
I work very closely with dealers as part of my daily job and I don't trust any of them. Everything you have ever heard about dealers are well......true.
Great Video, we appreciate your efforts.
Thank you for doing this video! big help for me
Same setup as the Challenger. Super easy replacement!
Excellent tutorial
Good vid. Thinking of buying a Wrangler. You’ve convinced me to go manual transmission.
Great video sir
Awesome video thank you so much for this
Thanks for the video. Just about to go do mine now. I haven’t read through all the comments but I also had a whine with my JL from day 1 (bought it new) at the time I figured it woudl go away once the jeep got broken in and then eventually just got used to it and forgot. My Dad brought it back to my attention and when mentioned to the Dealer they looked into it and found the Idler Pulley was worn, (faulty from the factory). They replaced it and the whine is gone. Might be worth looking into.
60k on my 2019. I think I should do this. Nice to see that the transmission pan bolts are very accessible on the Wrangler.
Thank you! Great video
Did mine today at 66,000 miles magnets were very clean. Replaced fluid, gasket and filter with Mopar parts. Took about 3 hours.
Thanks for the info! 😎👍
Thanks! Just hit 40k miles, might be time soon
100k on my 2020 never changed it. Lifetime warranty from jeep on power train and I asked 3 dealers, no need to change. Supposedly the trans fluid has been tested to 500k. No whine in my trans. No shift issues.
Awesome video. Significantly easier than a JK.
Love it man very informative 👍🏼👍🏼
Good video 📷
Very good video 📹 👍 Thanks
Thanks!
Thank you for this video! I ordered and then bought a 2021 JL Jeep Wrangler Unlimited Rubicon about 9 months ago. It looks almost identical to yours. I too have the 3.6 liter Pentastar V-6 but mine has the new eTorque, which I hate. I also have the 8 speed automatic transmission in mine as well and am wanting to swap out all of the drivetrain fluids with Amsoil. I know what the front and rear differentials take and Amsoil told me what automatic transmission fluid to use in the tranny but I couldn’t find a “How to” video anywhere until now because FCA was saying it was a sealed system. Thank you very much for doing this video. Next I just need to find the transfer case video. But I’m pretty sure it has a normal drain bolt and separate fill bolt. So that one shouldn’t be any more difficult than the front and rear differentials.
The transfer case is a simple drain and fill using ATF+4. I have changed that out as well. What Amsoil are you going with, I have thought about changing over to that?
Hello, I’m a 49 years old woman, never in a million years will think on doing any mechanic of any car into I have my Jeep Wrangler no 2018 and everything change,I’m been doing oil and filter change, with my younger son’s help (19 yrs old) he though me how to do the front and back differential and let me tell you, it was so EASY, there is videos to should you in how to do it. Now my next thing to do will be the transmission, little nervous but with this video feels confident to do the job. Thank you for the video😊
@@lorenaolivagomez I know how you feel 😂. There was only one vehicle I ever felt semi comfortable doing maintenance on, and that was a 76 Chevy short wide pickup that I had in high school and college. But I just got a new Jeep Gladiator Rubicon, and I love this thing so much, I want to be more knowledgeable about it, and want to make sure things are done right.
Thanks for the video! My 2021 gladiator with 11k miles: today, while driving down a small downhill and making a right hand turn at the same time, in second gear and on throttle, just as I hit the apex of the turn I hear this whining sound. Like an electric motor spinning at 20k rpm. It whined up, then the sound disappeared. Needless to say, paranoia immediately kicked in
Makes me wonder if, the fluid level is just not up to specs here....? Going to talk to the service and ask them to check the level. But maybe, I’ll just change the fluid and fill it back up correctly. Thanks again!
I'd have to take a listen, but my son's JLUR 8 speed definitely makes a funky whine sound in reverse.
KIND OF A PAIN IN THE A%# WHEN YA DON,T HAVE A LIFT WHEN IT COMES TIME TO FILL WITH A HAND PUMP, WHEN THE TIME COMES. KEEP UP THE AWESOME WORK MATE, STAY SAFE !!
The filter might of had some fluid in it which could be the difference you’re seeing. I heard they sell a dipstick for the transmission fluid from the dealer. Great video I’m looking to change the fluid in my JT at 60k which is a long while away.
I have heard that as well, including from the parts guy at the dealership, but I haven't been able to confirm it. It would be super helpful if they would add a dipstick.
Yup, that fluid was in the filter for sure. You should have noted a difference in the weight of the one that came out to the new one......fluid weight
If you offroad and have big tires, I wouldn’t wait till 60K. I just changed mine at 45K and the oil is almost black. It’s a cheap insurance
For a car with a transmission fluid dipstick, I can always check the fluid level and ensure it is at max level when the transmission is at working temperature. And then, drain the old fluid, and add new fluid back at the same amount that I have drained without worrying about putting in too much or too less. And this process does not require the car to be flat during a fluid change. But now, the manufacturers make transmissions without fluid dipsticks or drain plugs.
Yep, they call it a "lifetime" transmission fill, which we all know there is no such thing. It's really not that bad once you do it a couple times.
nice attention to detail. Appreciate that Wrangler JL has a trans temp gauge built-in, because on other vehicles a scan tool is necessary to track trans temps during the change service.
Wish the JKs had a drain plug. I swap out 2 quarts of ATF with every oil change in my JK, will do a pan drop at 60K to replace the filter.
I had my dealer change at 30k and I don't recall it being all that much. however I'm approaching 60k now and will do the change next myself. I did recently read in a forum that one reason these might be low from the factory is that the filters will need a short amount of time to absorb the fluid. Checking level again after 25-50 miles will probably require a bit more fluid.
I noticed you didn`t change all the the fluid. I have a 2016 Jeep automatic I changed out the filter and did a full transmission fluid change. ran about 15 quarts all together. I do understand the fluid is very expensive in those 8 speed transmissions. Very informative thanks for sharing.
What do you mean 15 qts? Do you mean you did two drain and fills?
@UncleFred1989 full tranny fluid drain and refill. I disconnected the return line and would start my jeep for 29 seconds. Let that fluid run into a bucket then refill the dipstick tube and repeat until the fluid ran nice and red again. Those 8spd trannys are hard to work on. You have to know what your doing
I went to the dealership to find out how much fits inside a 2019 Jeep Unlimited Rubicon and was told that it takes 10 quarts. Is the 2018 different?
Thanks for posting. The only bad thing is that you are only able to change "some" of the fluid. Most of that remains in the TConverter and you cannot really get that out without removing it or a flush.
To those doing this, I would advise never to reinstall those bolts using a driver. It's super easy to strip out aluminum threads.
Hey great job!!! Thanks for showing this. I liked and subscribed.
I had researched this earlier with the intention of doing this myself.
Questions:
1) I've seen some put their wheels up on jack stands when going through the gears. Did you determine that having the wheels spinning wasn't a requirement when doing that?
2) I've also seen video on other vehicles where they said their muffler was in the way of removing the pan. In your video, with the skid bar removed, it seems like it wasn't an issue to remove the pan?
3) Your video showed that the filter is not part of the pan, which I had seen conflicting information, so it was good to see. Was the original transmission pan seal pooched, and not reusable and a new one is necessary?
4) Where did you find your information on the process?
Super job and thank you very much for showing this.
Cheers.
1) I have seen documentation showing both ways of checking the level, both on the ground or on jack stands. I spoke with a technician who stated it didn't need to be on jack stands or in the air, that was for safety reasons so you didn't run it into a wall, etc. Take that for what its worth, but I am comfortable with the way I did it and the level of fluid.
2) Muffler is not in the way, the only thing I removed was the skid plate to make things easier, it is 3 bolts and comes right off. Plenty of room to drop the pan with the muffler there.
3) Original transmission gasket was probably good enough to reuse, looked great, just didn't want to chance it leaking.
4) Information came from Weber State Mech Shop, technicians at my work (auto industry), and ZF forums (both FCA and BMW) - The BMW documentation doesn't have you put the vehicle in the air.
@@outofoffice3443 Hey thank you for the reply. I appreciate that you answered my questions.
Yeah with that gasket thing, it's better to be safe than sorry.
I saw a video, I think it was Weber State Mech, and he mentioned a concern about a bypass valve going from the transmission to the cooler up front, causing concern with regard to fluid level accuracy. Did you come across that or is it an issue that you are aware of?
Thanks again.
Cheers.
@@CheaperJeeperTV Sorry for the delayed response just saw this. I saw he mentioned that on his channel as well but didn't find any other info on it. I am comfortable with the level I achieved, as stated in the video I did end up putting about 1/2 to 3/4 quart more in than what came out of it but I am not concerned as I have read several other accounts of the transmission being filled low from the factory, plus a 1/2 quart one way or the other shouldn't do any damage. Time will tell. My transmission has had a whine or whistle in it since day 1, so I am mentally prepared to be replacing it at some point in the future. (Dealer says its normal).
@@outofoffice3443 Hey Thank you so much for the info. I'll post here to let you know if I come across anything else new. If you cme across any links or videos that may help me understand the process or questions, please feel free share. Thank you again for all the help. Cheers.
@@CheaperJeeperTV Looking forward for that step by step video for DIY beginners out there, thanks!!!
How much fluid did you end up putting in? or better question, how much ATF did you buy- including the additive? thanks, EDIT- just got your answer at the end of the vid.
When it comes to any fluids and filters, other than motor and air, I always go with OEM, ONLY Mopar ATF+4 for my JKs, only Mopar Trans filters, only Mopar 80W90 gear oil and Mopar LSD additive for my differentials. Zerex coolant though, it is the best.
Thanks for your video! It looks like this is by far the only one which is out there at the moment I feel like. Do you know how many quarts of the transmission fluid is needed? I only saw two quarts in your video and I haven't heard you mentioning the amount which was needed for your 3.6l engine... Thanks!
5 but it’s always better to have more
What about the old TF sitting in the transmission fluid cooler and locked with the TF bypass valve? I believe the valve opens at 140F.
brooo thanks for the video very informative!🙏🏽 just wondering would you have to torque the bolts on the front skid bar and if so at how many ft-lbs?
I torqued the skid plate to good and tight.
Great video, was just researching this for my JT. Said I needed about 10 quarts for a complete trans oil change.
For the trans oil pan filter, is it just a remove the old one and then plug and play for the new one?
Yep. It's held in by two studs/nuts in the pan. Or you can buy the kit that includes everything.
If you want to do a better oil change , pull off inspection cover on torque converter rotate down where drain plug is at bottom , you should get around 5 qts more out .
I ended up selling this Jeep and buying a JT. When I hit the 25k mark and change the fluid I will give this a try. When draining the torque converter, is anything special needed to re-fill it?
Thank you for the video. I used this process on my son’s 2019 JL w/ 850RE. I would think that the same procedure would work with the 8HP75 that is installed in the EcoDiesel and 392?? Fill plug is on opposite side but same filter number and fluid. Thanks again!
This is just as an FYI, figure I’d share:
I owned a 2021 gladiator rubicon that had developed a whining sound in the transmission at around 4000 miles. Kept the truck up until 19k, then started having more problems with other stuff. So, I traded it in and bought yet another brand new Gladiator Rubicon. This time around, I paid close attention to the transmission whine. Up until 1000 miles, nothing. Then slowly but surely the sound developed just like my other one, the same exact way. So far, this is the repro process: transmission will not whine unless it reaches 165 degree. Once this happens, it will whine from standing, rolling and shifting into 2nd gear when in auto mode. Shifting manually will not cause this sound. Once up to temp and starting up hill, or when cornering fast and in 2nd gear, the tranny makes this noise, appearing to run out of fluid ? Another way to repro is: driving 50-55 in 7th or 8th (cruising) and braking hard, down to about 35 then hard acceleration: you will hear the same sound. I am thinking my truck is low on fluid. Will replicate your method of testing and see what I find out. Thanks for the upload!!!
Personally I believe the whine is “normal” ish. I put another 25k on wheeling and it hasn’t changed. I ended up trading for a brand new Gladiatior and noticed a small whine on it with 12 miles on the clock. I also have rented a JL and JT while on work and noticed whines as well.
Does the temp have to be to 86 degrees and then shift to R then D then M2 etc.. first before placing in fluid or after adding new fluid and then go through the temp and shift pattern then check for any fluid that needs to be added
Thanks for the great video, seems like a straightforward process. I think I'd order a new gasket just in case, and reuse the original if looks ok. Then I'd have that new one as an extra if the gasket starts to look "iffy" w/ future ATF changes.
Do you happen to know the part # for that filter?
Also for that final fill was your trans temp at 86, then you ran it through the gears again to get it up to that 100 degrees that you noted? And I assume you only go back once to get that final fill, not any more cycles?
Appreciate you doing this as it simplifies all the steps in the FSB to something us DIY guys can deal with!
Filter #68417054AB. I didn't do any more cycles after it reached temperature and it was full.
@@outofoffice3443hey I can’t find the gasket part number I want the aluminum like the one you used seems only rubber is available now a days
@@unkownnumberyes5058 The Mopar gasket for the 850RE pan is 68522534AA. It has a silicone construction.
I have a 2020 JT Gladiator. I was going to change this out as well. QUESTION: Is 6 QTs going to be enough for change out? I have 6 QTs but wonder if should grab 1 QT more.
Looks like the Mazda FZ trans fluid (light blue). Why not just replace the same amount you removed ?
I put almost a quart more in mine also after first change.
I have heard from a few folks now theirs was short a quart from the factory. Appears to be hit or miss.
Can you give us a part # for the gasket and transmission filter? Also, how's the transmission been since the oil change? Thank you.
Did you find the gasket part number ?
If the trasmission is whining you need to add oil! start the jeep leave in park warm up to 86 to 122 degree remove the fill plug and add 1quart and 1/2 more aprox
Assuming you left the jeep running when you topped off?
26,000 is a great interval. If you wait to 60,000 plus, you run the risk of of slippage with a fluid change as the fluid accumulates particulates with time, which increase friction. Take that fluid out and replace with new, slippage can occur.
I agree with 30kish give or take is a good interval. Although waiting until 60k won't harm anything on these newer transmissions and fluid. This isn't 1995 anymore, things are much more refined these days and last longer.
VERY NICE JOB SIR, GREAT DETAIL, IS THIS THE SAME FOR A 2022 3.6 WITH AUTOMATIC, DO I HAVE TO DROP THE EXHAUST PIPE WHEN TIME COMES ??....NEW JEEP OWNER !!
Yes this will be the same on the 3.6 2022, you do not need to drop the exhaust pipe.
@@outofoffice3443 THANK-YOU FOR YOUR REPLY, STAY SAFE MATE !!
ZF is not BMW. ZF is ZF. Their transmissions are used in a lot of vehicles and they make them for other car company’s as private label like FCA. Chryslers current 8 and 9 speed trannys are made by ZF.
Do you do a top off after the 80’s temp while engine still running or do you turn it off and then top it off??
If you didn't see it else where in the comments, he replied "You will need to keep the Jeep running to have the correct level."
I wanna change my 2015 Jeep renegade transmission fluid but I don’t know. I’m scared to. The whole measuring fluid procedure is scary. What if I put too much or too little?? I don’t think I can change the filter. It’s nice to see you can do that on the JL. I’m thinking about getting a JL two door. I don’t mind replacing parts if it’s easy to. I would definitely spend the money to get a new filter and gasket like you did. My renegade tranny looks more complicated than your JL tranny. The tranny whining you spoke of kind of scares me about getting a wrangler now I gotta admit lol.
The renegade would be the same procedure, however, you would have to replace the entire pan as the filter is built in. The JL and JT are the only Jeeps that can replace the filter and reuse the pan.
Very good video .What is the amount of oil fluid and is it better to change it at a distance of 35,000 miles or less.
I replaced about 5.5 quarts of fluid during this change, keep in mind there is still fluid in the torque converter that doesn't come out on a drain and fill. ZF recommends changes of 80k miles and Jeep claims lifetime. You will have to decide what works for you, I plan on changing every 40k miles here on out as I am pretty hard on the Jeep.
To properly do this you must completely flush. Simple to do and far far superior to leaving several quarts of contaminated fluid in the torque converter.
can you please describe the whine noise ,,, how is it sound like ? is it like a whistle noise ? and in what RPM you hear the noise ?
thanks for the video
My 21 Mojave with 8500 miles just grenaded it’s transmission yesterday.
That really sucks. Was it making any funky noises? Any warnings or just die?
@@outofoffice3443 it was. I told the dealer about it and they said working as designed.
Super helpful. Ill do mine myself as well. Any idea what they charge for this at the dealership?
I have read they charge upwards of $800 for a service.
I have a 2020 jeep grand cherokee trailhawk. I imagine I would have to get a whole new pan with built in filter?
That is correct.
Thanks for the video. How do you bring up the transmission fluid temp in the cluster?
Controls on steering wheel left side. Use the arrows.
Thanks
hello can you give me the part number for and the place where I can buy the filter and the gasket 👍
Did you fill with the engine running or shut off? My recently acquired 2018 JL is leaking fluid through one of the pan bolt holes and I have no idea how much is left in it.
You will need to make sure the transmission is at correct temperature, then on level ground leave the engine running while checking/filling the fluid.
So after getting the Jeep to operating temp, do you keep it running to check the fluid level again and top off or do you shut it off?
You will need to keep the Jeep running to have the correct level.
@@outofoffice3443 thanks!
I'm just curious, for example. The oil filter is like twenty pounds of torque ... Transmission bolts are 89 on the torque rench ?? I'm just not so familiar. It sounds like a lot of strength
Make sure you have an in lb torque wrench, not a ft lb. The conversion is 12 in lbs = to 1 ft lb.
What symptoms might I notice if mine had been low from the factory? I just got a '21 with 15k miles on it, and so far it's been buttery smooth.
No symptoms most likely, maybe some whine.
@@outofoffice3443 Ok. I think I'll change it around 40k, I don't plan on doing a lot of towing or other high load applications.
Great video! I will be doing this around 50k miles. BTW, why is your instrument cluster different than mine (2019 JLU Rubicon)? The temp and fuel gauge is digital on the ones I've seen...
The digital gauge screen is part of the technology package. It's an option on Sport and Sport S models, pretty sure you won't find a Rubicon without it.
At 10:36 you said the temp was 100 degrees... you started the fluuid fill at 86. Did you restart and run the Jeep again?
You fill it up, the get the transmission to operating temp and top it off.
@@channell11 thx man.
Also, did you leave it running In park when you topped it off?
Yes, it is left running and in park when filling transmission. it must also be withing temperature range.
@@outofoffice3443
What is the hex size of the bolt for the drain nut on the trans. The 2 door gas tank is so tight only a cut down head will fit in there
Do you have the part number for the gasket? Thanks
Thought I may help out my friend. Crown Automotive 68362042AA Automatic Transmission Oil Pan Gasket for 18-22 Jeep Wrangler JL. Price: $30.99
Mopar: Oil Pan Gasket - Mopar (68522534AA) Price: $43.11
Personally I would get the OEM part. Only a few more bucks and probably well worth it.
Hope that helps
Every 3rd oil change. I drain and fill.
I am seriously considering something along these lines. I am tempted to try the redline fluid.
Aren’t you supposed to cycle through all 8 speeds, and at 10 second intervals? Maybe that’s just so it would be a sufficient amount of time to where it reaches that 85 degrees, without having to repeat the process like you had to do. Also, isn’t there a better oil that ZF recommends versus the Mopar oil?
I swear, half of these guys say to never change the fluid in an auto. That’s just crazy to me. I just bought a 2022 Jeep Gladiator Rubicon, and I want to take care of this. My first 4x4. Had an old short wide pickup once, but it was only rear wheel. I only have 2k miles on it, so I have a ways to go.
I haven’t decided when I’m going to do my first oil or transmission oil change. Many say that your first is the most important. Because today they only break in engines for an hour, and that there will be metal flakes and shavings. But then Jeep tells me they add additives from the factory, and that I want to go the full recommended distance before changing.
Only thing I know for certain, is I’m changing that oil every 5k miles with full synthetic.
Hi I spoke with a transmission shop, 21 Gladiator. They recommend at 100k transmission fluid change.
@@peterc8979 Hey man! Thanks for the reply. Haven’t got a definitive answer from anyone. 100k seems like an awfully long time though. Maybe I’ll do mine at 50k then. I always do shorter intervals than the recommended, and always do my very first oil changes in half the time/miles
How was it low from the factory? When you took out the fill plug it dumped out
More when in than what cameout. I measured it . I have read several comments of others with the same issue. According to manufacturer specs several have been a 1/2 to full quart low from factory.
Might it have better to bring it up to full 190 degrees before the service?
Per the service manual, you don't want the transmission at the full operating temperature when checking and filling.
@@outofoffice3443 Thanks, does it state an optimum temperature or is it a safety issue?
Hey just changed my trans oil, used Valvoline Maxlife (zf lifeguard 8) equivalent. Put in exactly what I got out of the pan about 6 quarts just drove around and I’m whining when I accelerate. Anyone might know why it’s whining ?
Changed filter and gasket as well, ran through fluid level check as well. I have no idea why it’s doing this
Was it whining before? Did you run through the proper steps and temperature for checking the level? Are you sure it’s the transmission making the noise? The only things I can think of unless it’s the maxlife which others have used without issue.
You said it probably came low from the factory. That seems unlikely.
Is the pan steel or plastic?? Looks plastic to me. That’s odd because mine came with a steel one from the factory!
The pan is steel on the JL and JT
Is the pan gasket reusable?
Yes it can be reused. I ultimately put a new one on but it didn’t need it.
My 2021 unlimited high altitude wrangler has rough down shifting at 30 and 20 mph. Feels like it’s engine braking. Anyone have that experience?
Yes, I have a 2019, and sometimes downshifts around that speed are rough. I only feel it like, for example, let's say I am accelerating going 20 something almost 30 and the car is about to change gears, but I take the foot off the pedal and let the car ride and downshift alone it feels a little rough how you described, but only when the RPMs are rising to change gears, and I let off without pressing the breaks, I don't know if that makes sense hahaha. I tend to let the car just ride on its own downhill or anywhere when I can to save gas before using breaks. If I see a red light a little far away, I just let it slow down on its own without breaking until I have to. My mpg has improved a lot, thanks to that little trick.
Mettre votre levier de vitesse en mode manuel quand vous descendé une pente.
lots of cars use ZF transmissions.
Indeed they do! Been a very reliable popular transmission.
The ZF tranny is not a fca tranny it's made by some German company.
@@rosco1883 🤣 that's pretty bright. the ZF tranny is made by "some german company" ... yeah, ZF! 🤣
So you’re filling with the car running?
Yes the proper way to check and fill is with the correct transmission temperature and it running.
so is the sound normal?
Who knows. Been told yes, been told no. I have heard it on several other 8 speeds. I drive the hell out of it though. If the time comes I’ll just put a transmission in.
My mechanic always tells me, never replace the fluid. Only add whats missing
Hes a complete idiot
Had no idea dealer wants $40.00 for 1 quart of transmission oil, ouch!
It can be found on Amazon for a better deal. That is the route I went.
Amsoil
No
This is why you get a manual.
Those car manufacturers are idiots making transmissions unservicable
Do you do a top off after the 80’s temp while engine still running or do you turn it off and then top it off??
If you didn't see it else where in the comments, he replied "You will need to keep the Jeep running to have the correct level."