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Discussion Starter · #1 ·
Hello everyone,

Soon I will hit around 50k kilometers in my MCS F55 and I was thinking about an automatic transmission fluid change.
It is the new 7-speed dual clutch transmission from getrag "7DCT300", but I don't know what type of fluid should I buy?
I was thinking about Millermatic ATF DCT-DSG from Millers Oils, I like that brand and it has served me well. But is it the right type for this transmission?

I looked everywhere and there is no mention of the new 7 DCT, still older 6 speed Aisins.
I would be so glad if someone here could help me since I'm lacking in informations about ATs!

Thank you! ?
 

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Millers are brilliant if you ask on their contact /query link on the website-got back to me within a day re oils. Or you could ask your dealer but expect they'll just say 'it's sealed for life sir!'
 

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Discussion Starter · #4 ·
Coming back with infor from Millers and unfortunately the Millermatic ATF DCT-DSG can't serve my gearbox.
I'm struggling, wishing somebody knows something about what fluid does this new DCT use :unsure:
 

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You could always try the manufacturer and see what they recommend...

I don't think it will just be Mini who claim the box is fill for life as this article suggests it is as well...

These guys seem to sell the gearbox component parts and can do rebuilds so they might have and idea as to what oil to use...
 

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Discussion Starter · #7 · (Edited)
(edited for better overview)
I think they mean it for the mechatronics in the dsg, which is closed and cannot be changed, therefore its lifetime, not for the wet clutches, which is the 4L capacity and can't be lifetime.

I will keep all of you updated when I get a reply or some kind of information.
Reply from Millers Oils HQ in UK - replied that their Millermatic ATF-DCT is NOT suitable for this gearbox. They cannot offer me a product.

I'm awaiting replies from Magna PT (getrag), Ravenol and some local BMW/MINI specialists.

Will keep you informed below!
 

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Discussion Starter · #8 · (Edited)
Got multiple replies from trusted local BMW/MINI specialists and FOUND IT!
OEM: BMW DCTF-2 (83222433157)
Not original, but you can use it:
MOTUL DCTF
CASTROL ATF Multivehicle
RAVENOL MTF-2 75W80


Specification for that DCT is DCTF-2 75W80.
Capacity is around 4.8 liters.


Suggested interval change is between 80.000 to 120.000 km
 

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Going to change my 2014 F56S ATF soon and I was also looking to change the transmission fluid filter since I'm already down there. But looking at the realoem website to search for a part number, it doesnt seem like the F56 has a filter, does it? Don't all cars have a transmission fluid filter?
 

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Got multiple replies from trusted local BMW/MINI specialists and FOUND IT!
OEM: BMW DCTF-2 (83222433157)
Not original, but you can use it:
MOTUL DCTF
CASTROL ATF Multivehicle
RAVENOL MTF-2 75W80


Specification for that DCT is DCTF-2 75W80.
Capacity is around 2 liters.


Suggested interval change is between 80.000 to 120.000 km
Did you ever sort out the change? BMW/MINI don't offer any repair procedures for draining/refilling this gearbox, since they say it's lifetime fill.
 

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Discussion Starter · #12 ·
Did you ever sort out the change? BMW/MINI don't offer any repair procedures for draining/refilling this gearbox, since they say it's lifetime fill.
yes, 4.8 liters of transmission fluid, really easy, done by BMW/MINI individual specialist 400 USD, used Ravenol, really bad grayish junk came out of it, glad I changed it. Improved downshifting, upshift is about the same, gearbox is nice and smooth :) definitely not lifetime, too bad I did not take a picture of the gray junk, that was not even oil or fluid anymore haha - more like a slimeish fluid, only 45k miles - Suggested interval change is between 80.000 to 120.000 km ( 50k-75k miles)

find a guy that can do it, it is basically a flush and refill, refilling with the wheels spinning slowly to ensure proper lubrication and dispertion of the new oil until it is topped (ca 4.8liters)
 

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yes, 4.8 liters of transmission fluid, really easy, done by BMW/MINI individual specialist 400 USD, used Ravenol, really bad grayish junk came out of it, glad I changed it. Improved downshifting, upshift is about the same, gearbox is nice and smooth :) definitely not lifetime, too bad I did not take a picture of the gray junk, that was not even oil or fluid anymore haha - more like a slimeish fluid, only 45k miles - Suggested interval change is between 80.000 to 120.000 km ( 50k-75k miles)

find a guy that can do it, it is basically a flush and refill, refilling with the wheels spinning slowly to ensure proper lubrication and dispertion of the new oil until it is topped (ca 4.8liters)
Do the double-clutch and the gearbox share fluid? I thought I read that the clutch has its own fluid.
 

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Discussion Starter · #16 ·
GETRAG also says that oil is for life... Attached is the presentation with a lot of technical details.

View attachment 71966
Of course, 120-150k kilometers can be the whole life for some gearboxes, that’s why they call it lifetime. No fluid in a car is lifetime. What I saw that came from my gearbox, nothing will change my mind.
It is not expensive and it’s better than spending more for a new gearbox if anything happens. Especially if you drive sporty or have a remap, the oil burns. Do what you want, it’s your car :) I’m glad I did it, I recommend changing it to everyone, btw MINI/BMW has a file that states recommended change interval, that’s the 80.000-120.000 km interval, they just don’t push it because it cost them money and they make far more money when changing the whole gearbox. I saw many of cars change their whole unit just because there was no service done to it.

I just highly recommend it guys!
 

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Of course, 120-150k kilometers can be the whole life for some gearboxes, that’s why they call it lifetime. No fluid in a car is lifetime. What I saw that came from my gearbox, nothing will change my mind.
It is not expensive and it’s better than spending more for a new gearbox if anything happens. Especially if you drive sporty or have a remap, the oil burns. Do what you want, it’s your car :) I’m glad I did it, I recommend changing it to everyone, btw MINI/BMW has a file that states recommended change interval, that’s the 80.000-120.000 km interval, they just don’t push it because it cost them money and they make far more money when changing the whole gearbox. I saw many of cars change their whole unit just because there was no service done to it.

I just highly recommend it guys!
i agree, fresh oil can only be good for the gearbox. The cost is negligible in comparison of a new gearbox or servicing the existing one!

if i keep my mini until 100.000km i'll do this :)
 
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