6MT fluid change

M Fifty · 02-16-2022, 07:14 AM

Quote:

Originally Posted by vrooooom

I'm on the Redline and my shifts from 1st > 2nd > 3rd when really working it hard is not very smooth (lack of word to describe). Shifting quick seems to struggle but if not in a hurry (gentler), no issues. Never had issues going to 1st from neutral.

"Notchy" or "Baulky" are common choices.

It basically feels like the clutch isn't disengaging properly.

Edit: Oh, and "recalcitrant"

vrooooom · 02-16-2022, 08:05 AM

Thanks M fifty. Ha3. I had to do a dictionary search for them. Bang-on!

David.m · 02-16-2022, 04:26 PM

Quote:

Originally Posted by vrooooom

I'm on the Redline and my shifts from 1st > 2nd > 3rd when really working it hard is not very smooth (lack of word to describe). Shifting quick seems to struggle but if not in a hurry (gentler), no issues. Never had issues going to 1st from neutral.

Mine shifts fine & the same whether going hard or just normal (have an Auto Solutions SSK)

F87source · 02-16-2022, 04:30 PM

Quote:

Originally Posted by F87source

Interesting. But to me this sounds like a clutch delay valve issue not a fluid issue.

whoops meant to say clutch delay valve

vrooooom · 02-16-2022, 06:48 PM

Quote:

Originally Posted by F87source

Interesting. But to me this sounds like a clutch delay valve issue not a fluid issue.

I’ve taken mine out a while back.

F87source · 02-16-2022, 06:50 PM

Quote:

Originally Posted by vrooooom

I’ve taken mine out a while back.

Hmm interesting, I am not sure then.

Daytona_550 · 10-03-2022, 01:02 PM

Quote:

Originally Posted by F87source

Quote:

Originally Posted by sharpmoney

would redline DCTF have warranty implications? being that i'm on my second gearbox....and the first one went bad for no reason (i did NOT abuse the car or track it, 8k miles in LA traffic).

I would think it does, because bmw specifies MTF lt5 (as the only suitable replacement, unlike oil where you have a choice if it's LL01 approved. Dctf is also suitable for MTF lt5 applications as per redline but it's not bmw approved. I actually haven't been able to find a bmw approved MTF through ista either so I don't think bmw wants you using anything except MTF lt5, even the pentosin equivalent isn't approved and bmw MTF is a rebranded pentosin fluid.

MTF-LT-5 is backordered at FCP Euro and also out of stock at my BMW dealer's nearest two stores (was told 3 weeks to order from Germany). I ended up ordering some Pentosin FFL-3 from FCP Euro where it shows as a "ZF-approved alternative fluid" for MTF-LT-5.

Has anyone seen anything formal from BMW finally approving FFL-3 as suitable for the manual transmission in the M2C?

F87source · 10-03-2022, 03:10 PM

Quote:

Originally Posted by Daytona_550

MTF-LT-5 is backordered at FCP Euro and also out of stock at my BMW dealer's nearest two stores (was told 3 weeks to order from Germany). I ended up ordering some Pentosin FFL-3 from FCP Euro where it shows as a "ZF-approved alternative fluid" for MTF-LT-5.

Has anyone seen anything formal from BMW finally approving FFL-3 as suitable for the manual transmission in the M2C?

I think Pentosin FFL 3 is acceptable, I have heard people use that before. Although I would have upgraded to another fluid like redline dctf.

Daytona_550 · 10-04-2022, 07:19 PM

I may use Redline next time around but, for now, still under warranty and trying to stay as close as possible to "OE" fluids.

Fwiw… I asked FCP Euro if they had any documentation of BMWs approval and this was their response:

"I'm happy to help! I took a look into this for you and I was not able to find any information or documentation regarding the fluid being approved by BMW."

rbahr · 10-19-2022, 08:29 AM

My $0.02: If you track your car, I would change regularly - say every year - cheap insurance. Otherwise several years, certainly not 'never'.

I have mostly changed my mind on RedLine products other than their engine oil - no data to back this up...

Ray

fleetfoot · 10-19-2022, 05:22 PM

Quote:

Originally Posted by rbahr

I have mostly changed my mind on RedLine products other than their engine oil - no data to back this up...

???

F87source · 10-19-2022, 05:38 PM

Quote:

Originally Posted by fleetfoot

???

I'm the opposite, I prefer other engine oils to redline, but I like the transmission fluid.

vrooooom · 10-19-2022, 10:02 PM

I'm just going by what's recommended by F87source.

. If it's good enough for his car, it's good enough for mine.

rbahr · 10-19-2022, 10:18 PM

My experience with transmissions is that the factory fill is often the best. Found this to be true in Porsche and Subaru!

It is funny how oils become almost a religious topic!

I usually trust the opinions at BITOG... Smart people, in general.

Ray

AlpsRider · 10-25-2022, 07:37 PM

My car is 4 years old and has 24k miles on it. I took it in for the last warranty check and had them change the transmission oil. It shifts smoother now. I don't think it's placebo.

F87source · 10-25-2022, 08:22 PM

Quote:

Originally Posted by AlpsRider

My car is 4 years old and has 24k miles on it. I took it in for the last warranty check and had them change the transmission oil. It shifts smoother now. I don't think it's placebo.

I don't either, I think it's legit that clean fluid makes a difference. My M2 noticeably engaged 1-2 shifts much smoother after new fluid.

vrooooom · 10-25-2022, 08:35 PM

Quote:

Originally Posted by AlpsRider

My car is 4 years old and has 24k miles on it. I took it in for the last warranty check and had them change the transmission oil. It shifts smoother now. I don't think it's placebo.

Did you do your rear differential fluid as well?

chris719 · 10-25-2022, 10:31 PM

Quote:

Originally Posted by AlpsRider

My car is 4 years old and has 24k miles on it. I took it in for the last warranty check and had them change the transmission oil. It shifts smoother now. I don't think it's placebo.

I changed my Mazda 3 to Redline and I’m not sure if I felt a difference or not. Honestly, it’s a really smooth shifter anyway and it’s only improved with time. I am eager to try this on my M2C once I get more miles.

AlpsRider · 10-26-2022, 12:51 PM

Quote:

Originally Posted by vrooooom

Did you do your rear differential fluid as well?

Not yet, I plan on changing it around 30k since it was changed at the break-in service already. It will probably be another year at my current mileage rate. Then i think I'll change them every 30k or so depending on the time-line. I think lifetime fill of any oil is crazy.

tenkies · 10-31-2022, 01:13 PM

I just changed the Tranny fluid to Redline with 17K miles on the odometer and I didn't think it would make a difference, but it feels so much better. I did also upgrade the transmission bushing to rouge as well so that could be part of it. Shifting into 1 and 2 feels a lot smoother.

F87source · 11-01-2022, 09:55 PM

Quote:

Originally Posted by tenkies

I just changed the Tranny fluid to Redline with 17K miles on the odometer and I didn't think it would make a difference, but it feels so much better. I did also upgrade the transmission bushing to rouge as well so that could be part of it. Shifting into 1 and 2 feels a lot smoother.

I'm likely going to do transmission fluid next year or the year after, so I can't wait to finally get some redline dctf in the car.

KHAP13 · 11-05-2022, 07:41 AM

Looks like genuine BMW MTF-LT-5 is back in stock at FCP Euro, Bimmerworld etc… p/n 83222239654

02-16-2022, 08:05 AM	#68
vrooooom New BMW owner 325 Rep 843 Posts Drives: 2018 BMW M2 LCI Join Date: Feb 2021 Location: Philippines iTrader: (0)	Thanks M fifty. Ha3. I had to do a dictionary search for them. Bang-on!
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10-04-2022, 07:19 PM	#75
Daytona_550 Lieutenant 464 Rep 500 Posts Drives: '20 M2C / '08 550i / '23 330i Join Date: Oct 2019 Location: Daytona Beach iTrader: (0)	I may use Redline next time around but, for now, still under warranty and trying to stay as close as possible to "OE" fluids. Fwiw… I asked FCP Euro if they had any documentation of BMWs approval and this was their response: "I'm happy to help! I took a look into this for you and I was not able to find any information or documentation regarding the fluid being approved by BMW."
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10-19-2022, 08:29 AM	#76
rbahr Private 35 Rep 70 Posts Drives: To many & not enough Join Date: May 2022 Location: Carlisle, MA iTrader: (0)	My $0.02: If you track your car, I would change regularly - say every year - cheap insurance. Otherwise several years, certainly not 'never'. I have mostly changed my mind on RedLine products other than their engine oil - no data to back this up... Ray
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10-19-2022, 10:02 PM	#79
vrooooom New BMW owner 325 Rep 843 Posts Drives: 2018 BMW M2 LCI Join Date: Feb 2021 Location: Philippines iTrader: (0)	I'm just going by what's recommended by F87source. . If it's good enough for his car, it's good enough for mine. __________________ 2018 BMW M2 LCI BM3 Stage 2 + MPE + FTP charge pipe + MST V2 Inlet + TurboSmart DV + CSF FMIC + AA Hi-flow Downpipe + Turner Rear Shifter Bushing + Wiechers Strut Brace + Bilstein B16 PSS10 + Apex VS-5RS
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10-19-2022, 10:18 PM	#80
rbahr Private 35 Rep 70 Posts Drives: To many & not enough Join Date: May 2022 Location: Carlisle, MA iTrader: (0)	My experience with transmissions is that the factory fill is often the best. Found this to be true in Porsche and Subaru! It is funny how oils become almost a religious topic! I usually trust the opinions at BITOG... Smart people, in general. Ray
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10-25-2022, 07:37 PM	#81
AlpsRider Brigadier General 2865 Rep 3,842 Posts Drives: M2 Competition, LBB, 6MT Join Date: May 2015 Location: Earth iTrader: (0)	My car is 4 years old and has 24k miles on it. I took it in for the last warranty check and had them change the transmission oil. It shifts smoother now. I don't think it's placebo.
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10-31-2022, 01:13 PM	#86
tenkies Second Lieutenant 147 Rep 266 Posts Drives: 2017 M2 LBB 6MT Join Date: Oct 2017 Location: Socal iTrader: (0)	I just changed the Tranny fluid to Redline with 17K miles on the odometer and I didn't think it would make a difference, but it feels so much better. I did also upgrade the transmission bushing to rouge as well so that could be part of it. Shifting into 1 and 2 feels a lot smoother.
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11-05-2022, 07:41 AM	#88
KHAP13 Private 64 Rep 69 Posts Drives: 2018 M2 Join Date: Mar 2020 Location: Arizona iTrader: (1)	Looks like genuine BMW MTF-LT-5 is back in stock at FCP Euro, Bimmerworld etc… p/n 83222239654
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