11-07-2012, 09:35 AM | #23 |
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Just want to note BMW didn't develop LT5 for specifically. It is rebranded Pentosin FFL3 that is also used in Porsche PKG. It is more like BMW picked this oil because its spec fits its transmission and Pentosin gave them favorable price.
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02-11-2014, 07:06 AM | #25 |
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Hmm, was just checking the Redline site.
For the 1M they list D6, but for my '13 135i they list D4, even though they have the same transmission. The listing for the 135i must be wrong for that year. Looking for a synthetic fluid for my trans, the LT-5 is REALLY thick at -30. Even after changing it just 8000 km ago. Going to call Redline about it. Edit: Looking at the Redline site some more, looks like they recommend D6 for the N54 and the 1M, and D4 for the N55 cars. Now I am even more confused. Guess the listing for the 1M is wrong!??!? Last edited by MightyMouseTech; 02-11-2014 at 11:20 AM.. |
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02-11-2014, 10:07 AM | #26 | |
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Let us know what you find out.
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08-18-2014, 08:48 PM | #28 | |
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Drives: 2011 1M VO
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08-04-2015, 03:17 AM | #29 |
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Hello.
I'm used to put Castrol transmax Z oil in my M5 e39 manual gearbox, it really changed it and make it perfect ! I put the same in my 1M yesterday, the shifts are better. I hope that I will not have problem in some kms...
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08-04-2015, 06:11 AM | #30 | |
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I don't know if that oil would work well. It does not seem to be an approved oil for BMW gearboxes. ? http://www.castrol.com/en_au/austral...ransmax-z.html
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08-04-2015, 06:58 AM | #31 |
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Yes but the result is very good on my M5 e39 (I use it only on track) and lot of persons try it on M3 E46 (smg or manual) without any issue.
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08-04-2015, 04:35 PM | #32 |
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I had notchy gear shifts, especially into 3rd, sometimes it wouldn't even go in. So, i went to bmw after around 2000miles of this and had the oil changed, I asked for lt 5 but got lt 2, they promised me it was the correct oil so I said to the manager; ok on your head be it, or words to that effect. I drove for about 1000miles with lt 2 and then had to get the clutch changed, separate issue. I asked what oil the car was topped up with, they told me lt5 so I cornered them with bmw bulletin stating it should be lt 5, they argued that it wasn't so I drove away and done another 500 miles with same notchy Ness then out of nowhere bmw admitted they were wrong and changed it to lt5...I can tell you know, what a difference, it's like I have a new gearbox, every gear change is super slick I've done 2500miles and it's perfect.
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08-04-2015, 05:21 PM | #33 | ||
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08-04-2015, 05:24 PM | #34 | |
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I thought each time a new version came out LT2, then 3, then 4 etc it replaced the earlier version. Why would they even still have LT2? Are they not using LT6 now? |
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08-05-2015, 12:01 AM | #35 | |
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I do have info that says the lt5 was specifically made, or upgraded from another lt, for the 1m due to the car having a new type of carbon friction linings on the synchros |
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08-05-2015, 02:13 AM | #36 | |
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That is my info too. LT2 replaced LT1 which my 2003 ZHP uses now. Again, BMW put LT5 for a reason and people were putting other stuff in the gearboxes that they couldn't have been tested or engineered for the 1M gearbox at the time. I'm sure now they might have something but people were putting Redline and other fluids in their gearboxes that predated whatever new coating BMW put in the gearboxes. I would stay with LT5 or another oil that says it is compatible or meets the same requirements as LT5. |
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08-05-2015, 07:43 AM | #37 |
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Well its been 3 years now, still no problems with gearbox. Did another service change with the same Redline D6.. good as ever, smooth & buttery
Separate note, changed diff fluid as well, this time to Motul's competition gear 75w-140, boy.. short term results as compared to SAF-XJ is amazing!. Less drag and car feels more responsive. Trials from GTR owners (standard fluid also SAF-XJ) is just as positive. Also, noisy diff is gone, but that's probably coz I was on SAF-XJ w/o friction modifier before |
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11-14-2015, 04:10 AM | #38 | |
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I'll just add this here from Redline's manual trans lubes PDF found here http://www.redlineoil.com/content/fi...%2010-13-1.pdf
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11-14-2015, 07:43 PM | #39 | |
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Mike Miller said in a previous version of his Maintenance Guide that he uses MTL in BMW manual transmissions exclusively, unless he can't trust the driver to shift properly when the gearbox is cold -- in those cases he'll use an ATF.
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11-14-2015, 08:27 PM | #40 |
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The weird thing is the 1M box requires FFL-3 from pentosin. ZF state this is their recommended fluid. BMW MTF-LT-5 was brought out specifically for the 1M, it is relabelled FFL-3. FFL-3 is also used in the porsche pdk box. For that application redline state their DCTF is the replacement. Why then do redline state that D6 ATF is the replacement for FFL-3 in the 1M trans? Seems like they've stuffed up there!
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11-14-2015, 11:43 PM | #41 | |
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I've always run into consistency problems on redline's website with regards to recommended fluids (MTL? ATF? D4? D6?) and so just end up using OEM stuff. Another trivia point - the 1M gearbox is the same as the N55 manual gearbox. |
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11-15-2015, 02:47 PM | #42 | |
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Maybe now they meet all the BMW requirements but I doubt they did back in June 2011. |
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11-17-2015, 09:57 AM | #43 |
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I posted this in the 1M oil sticky but will post here too.
The official word from redline, DCTF is a more suitable substitute for MTF-LT-5 aka Pentosin FFL-3 than either D4 or D6. Attachment 1319866 specs... https://www.redlineoil.com/product.aspx?pid=146&pcid=9 |
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11-17-2015, 12:12 PM | #44 |
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Confusing -- I'm a simple country mouse. Are we perhaps gilding the lily here?
Interesting research though. In the final analysis, since BMW recommends LT-5 and it's been working fine for me, I'm unlikely to stray far from the party line. |
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