This is a sloppy how-to on changing Kia/Hundai's 7spd DCT fluid. The specific car I'm working on is a 2021 Kia Seltos SX trim using the 1.6L turbo w/AWD.
This works for the '21 Elantra N-line. Thank you so much. Mines came out dark as heck at 26K miles and the smell was awful. The redline oil made alot of improvements too. I couldn't find the OEM washer kit so I bought a kit off Amazon that contained M18x24x1.5mm crush washers and it's the exact size and fit. I'm sold!
Over here in the UK the Kia Dealers tell us the Gearbox is 'sealed for life' - by this I assume they mean for the 'life' of the 100k miles/7 year warranty. You are absolutely doing the right thing by maintaining the car's fluids, I'm all for that but I would be a little concerned that by changing the oil yourself if you later had some other problem with the DCT then maybe they would be able to test the oil and confirm that it's not factory oil and void the warranty? this will sound dramatic but warranties are basically insurance policies and tiny details matter. I only commented in this way because I'm currently investigating changing the Engine Oil on my 2021 Sportage with the 1.6 turbo engine because, like many, I don't like the sound of 10k service intervals when the engine holds less than 4ltrs of oil! my thinking was to 'extract' as much old oil as possible through the dipstick tube, replace with new oil, but leave the filter in place so as not to affect the warranty going forward. I've just subscribed by the way, thank you!
All fluids degrade with time and heat, so I don't know why the manual says that it's sealed and it should not be changed. Programed obsolescence I think. The idea is to maintain everything in optimal conditions, not to buy a new transmition.
The user manual says that this transmission has 70w GL4 DCTF oil and the oil you used in the video is for mechanical transmission can you explain to me
Yup - Hyundai/Kia's 7spd DCT is in fact a manual transmission, albeit with an automatic shifting mechanism and a dual clutch. If you look over the Redline gear oil I used, it is the same weight and viscosity, GL4 transmission oil, thus being compatible with the DCT. Redline also advertises this fluid as being compatible specifically with this transmission. Of course you don't have to use Redline, you can also get the OEM gear oil directly from your local dealer. Either works just fine.
I found this video excellent. No nonsense and easy to follow/watch. Very well done 👍 Have you noticed any difference between fluids? I’ve heard Redline is meant to be awesome for smooth shifts.
Honestly, I haven't really felt any difference whatsoever. I'll change it again at 60k miles and go back to OEM fluid and see if I notice anything then. 🤷
@@crxtodd16 are there any filters that should be changed? Also how do you find the transmission? I find it’s different day to day and can slip badly, mainly if the weather is cold
No dipstick, unfortunately. According to the FSM you're supposed to be able to check it with the fill plug removed. But, the fill plug I used isn't the one to check the fluid level. That one is the one that's inaccessible. That said, you just gotta keep track of how much you put in.
@@crxtodd16 awesome, thanks. Reason for asking is I got a high transmission temp alert so I wanted to check the level to see if it's a fluid or a sensor issue
How's the redline held up so far? I filled my oil from the top. I had to remove my air box and battery, but it gives me a chance to clean my engine at that time too lol
So far so good! The DCT is shifting no different than it was before the oil change, and I haven't noticed anything abnormal with the rear diff. I figure I'll probably change the oil again after I hit 60k miles. Speaking of cleaning the engine, I should do the same, haha. It's all covered in thick dust.
Guess what? So my transmission quit on me at 237k... I got a code P073F that it won't engage into gear 1. I guess I'm going to have fun with this and figure out what's wrong with it lol
I'm actually getting a new one. I'll probably sell the used one as is lol By any chance, do you know where I can find out how many quarts of oil it takes for a brand new transmission?
So far so good, no problems and it's running normally. I think at 60k miles I'll change the oil again, but this time I'll use OEM gear oil directly from the dealer.
something wrong with redline? I read about it and apparently it's very similar to oem, I also made the oil change with redline about 50 miles notice something weird with shift but only was a isolated event on a very slippery road I think I'm just paranoid. here the oil info: multilinkstory.blogspot.com/2019/07/hyundai-kia-dct-transmission-fluid-mtf.html?m=1
@@baruk8082 I think redline is just fine. Honestly, I'm just curious to see if there is any difference between it and OEM, hence why I want to switch back and forth.
I have a 2017 Hyundai Accent crdi with a 7spd DCT. I've been looking a bit online and am having a hard time finding good specific information about the transmission. Does anyone have a good resource for a workshop manual or something? Much obliged.
It's a good question. Hyundai and Kia utilize an online factory service resource (basically an online service manual) that you have to pay to access. I paid to access it on my previous car, a Genesis G70, then I downloaded most of the manual (they have it all divided up into sections, so it takes a lot of effort to download all of it). I found a couple segments online related to this transmission off some Hyundai and Kia forums. Otherwise, you can create an account on the Hyundai service website and pay their fee to access the service manual specifically for your car. It also has all the TSB's and other useful info. Even so, I've found that Hyundai/Kia's service manual to be very lacking in detail, unfortunately. The website is hyundaitechinfo(dot)com.
This works for the '21 Elantra N-line. Thank you so much.
Mines came out dark as heck at 26K miles and the smell was awful. The redline oil made alot of improvements too.
I couldn't find the OEM washer kit so I bought a kit off Amazon that contained
M18x24x1.5mm crush washers and it's the exact size and fit.
I'm sold!
Over here in the UK the Kia Dealers tell us the Gearbox is 'sealed for life' - by this I assume they mean for the 'life' of the 100k miles/7 year warranty. You are absolutely doing the right thing by maintaining the car's fluids, I'm all for that but I would be a little concerned that by changing the oil yourself if you later had some other problem with the DCT then maybe they would be able to test the oil and confirm that it's not factory oil and void the warranty? this will sound dramatic but warranties are basically insurance policies and tiny details matter.
I only commented in this way because I'm currently investigating changing the Engine Oil on my 2021 Sportage with the 1.6 turbo engine because, like many, I don't like the sound of 10k service intervals when the engine holds less than 4ltrs of oil! my thinking was to 'extract' as much old oil as possible through the dipstick tube, replace with new oil, but leave the filter in place so as not to affect the warranty going forward. I've just subscribed by the way, thank you!
All fluids degrade with time and heat, so I don't know why the manual says that it's sealed and it should not be changed. Programed obsolescence I think. The idea is to maintain everything in optimal conditions, not to buy a new transmition.
The user manual says that this transmission has 70w GL4 DCTF oil and the oil you used in the video is for mechanical transmission can you explain to me
Yup - Hyundai/Kia's 7spd DCT is in fact a manual transmission, albeit with an automatic shifting mechanism and a dual clutch. If you look over the Redline gear oil I used, it is the same weight and viscosity, GL4 transmission oil, thus being compatible with the DCT. Redline also advertises this fluid as being compatible specifically with this transmission.
Of course you don't have to use Redline, you can also get the OEM gear oil directly from your local dealer. Either works just fine.
Thank you very much for clarifying my doubt, I have to change the oil transmission of my Hyundai Kona and this video was very helpful..
I found this video excellent. No nonsense and easy to follow/watch. Very well done 👍
Have you noticed any difference between fluids? I’ve heard Redline is meant to be awesome for smooth shifts.
Honestly, I haven't really felt any difference whatsoever. I'll change it again at 60k miles and go back to OEM fluid and see if I notice anything then. 🤷
@@crxtodd16 there’s an idea
@@crxtodd16 are there any filters that should be changed?
Also how do you find the transmission? I find it’s different day to day and can slip badly, mainly if the weather is cold
@@Hutchy86 No filters in this type of transmission. I am not sure what you mean by how do I find it...?
@@crxtodd16 how do you find it? Do you like it ect ect
is there a trans fluid dipstick to check the level or do you have to take out the fill plug and see if any comes out as a level check
No dipstick, unfortunately. According to the FSM you're supposed to be able to check it with the fill plug removed.
But, the fill plug I used isn't the one to check the fluid level. That one is the one that's inaccessible. That said, you just gotta keep track of how much you put in.
@@crxtodd16 awesome, thanks. Reason for asking is I got a high transmission temp alert so I wanted to check the level to see if it's a fluid or a sensor issue
what is the schedule maintenance of the transmission fluid? every 30K miles?
@@HiFiInsider I think it's every 60k miles.
So I would add as precisely what I removed. Thanks
Is there trans filter?
@@jesuszaragosaProcessServer No.
I would just measure what fluid came out and put just a little more back in.
how many miles on that car when you changed it
30k
How many liter change oil transmission?
1.7 litres hyundai ioniq hybrid 2020 same as kia or just phone up the main dealers. They will be able to help you with this
How's the redline held up so far?
I filled my oil from the top. I had to remove my air box and battery, but it gives me a chance to clean my engine at that time too lol
So far so good! The DCT is shifting no different than it was before the oil change, and I haven't noticed anything abnormal with the rear diff. I figure I'll probably change the oil again after I hit 60k miles.
Speaking of cleaning the engine, I should do the same, haha. It's all covered in thick dust.
Guess what? So my transmission quit on me at 237k... I got a code P073F that it won't engage into gear 1. I guess I'm going to have fun with this and figure out what's wrong with it lol
@@josediaz2471 Dang man, I'm sorry to hear that. Have you been able to figure things out and get it fixed? Hope things are going well, take care.
I'm actually getting a new one. I'll probably sell the used one as is lol By any chance, do you know where I can find out how many quarts of oil it takes for a brand new transmission?
@@josediaz2471 I believe I say the total capacity at some point in the video... I've honestly forgotten already! I'm sorry!
Did this on my Veloster. Not hard at all but I was on a lift.
A lift makes all the difference in the world
Geez this looks like a cake walk compared to my VW DSG fluid and filter change. Is there no filter on these? Thanks.
Yeah it's pretty dang easy. I'm not aware of any filter for the tranny.
I have a veloster 7 speed dry DCT transmission.. how true is that dry dct dont need oil change??
I wouldn't say "never" but after 60-100k miles for sure it needs to be changed.
Where can I get the crush washer ?
Harbour freight 😁
I bought mine from my local Kia dealership. You can also order them online, just type in the part number found in the video. Good luck!
What were the oem gasket part numbers that you used?
Kia P/N: 2151311000
how's it holding up? I did the oil change but I'm concerned about longevity.
So far so good, no problems and it's running normally.
I think at 60k miles I'll change the oil again, but this time I'll use OEM gear oil directly from the dealer.
something wrong with redline? I read about it and apparently it's very similar to oem, I also made the oil change with redline about 50 miles notice something weird with shift but only was a isolated event on a very slippery road I think I'm just paranoid. here the oil info: multilinkstory.blogspot.com/2019/07/hyundai-kia-dct-transmission-fluid-mtf.html?m=1
@@baruk8082 I think redline is just fine. Honestly, I'm just curious to see if there is any difference between it and OEM, hence why I want to switch back and forth.
I have a 2017 Hyundai Accent crdi with a 7spd DCT. I've been looking a bit online and am having a hard time finding good specific information about the transmission. Does anyone have a good resource for a workshop manual or something? Much obliged.
It's a good question. Hyundai and Kia utilize an online factory service resource (basically an online service manual) that you have to pay to access. I paid to access it on my previous car, a Genesis G70, then I downloaded most of the manual (they have it all divided up into sections, so it takes a lot of effort to download all of it).
I found a couple segments online related to this transmission off some Hyundai and Kia forums. Otherwise, you can create an account on the Hyundai service website and pay their fee to access the service manual specifically for your car. It also has all the TSB's and other useful info. Even so, I've found that Hyundai/Kia's service manual to be very lacking in detail, unfortunately.
The website is hyundaitechinfo(dot)com.
Can I do the same process with a Kia Forte gt 2020 1.6T?
If it has the 7spd dual clutch transmission, then it should be the same process! 👍
How many quarts of oil did you put in?
I put in a full 2 quarts, my guy! KIA states it only needs 1.8qt, though. Just FYI.
much appreciated!@@crxtodd16
Perfect...
Kia sportage 1.6 T GDİ GT Line
şanzımanda aynı bu şekilde ihtiyacı olana duyurulur ben bu video yu çok aramıştım 👍🏼