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      11-07-2012, 10:35 AM   #23
sparoz
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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, 02:11 AM   #24
tphss
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After reading this I ordered Redline D4 ATF for my 335i transmission to be changed next service, thanks!
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      02-11-2014, 08:06 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!??!?

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      02-11-2014, 11:07 AM   #26
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Quote:
Originally Posted by MightyMouseTech View Post
Hmm, was just checking the Redline site.

For the 1M they list D6, but for my '13 135i they list M4, 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!??!?
That's weird. N55 135i's should use the same fluid as the 1M seeing as how they are the same exact transmission.

Let us know what you find out.
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      08-15-2014, 06:54 PM   #27
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Updates Please

Any update on the fluid recommendation? Thanks
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      08-18-2014, 08:48 PM   #28
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Quote:
Originally Posted by nachob View Post
I tried Redline in place of LT-2 in my E46 and it made a great difference in late August. Once October and November rolled around, I did not like it's cold properties. The shifter felt gummy until the car warmed up which was usually when i was pulling into my parking space at work. Too little, too late. I think the bigger concern is that LT-5 was especially formulated for the 1M and they were very specific about it. I believe there was some new coating in the gears that they were concerned about and the previous MT fluid was not compatible with it....You just put some of the older stuff in your gearbox. Yes it's synthetic but not sure how wise it is especially under warranty. Also, Redline has a red color which is a tell-tale sign if you experience transmission problems and they see the stuff. I hope it works out.


I recently replaced my fluid with LT-5 and while picking it up, the parts guy told me there was an LT-6 that supersceded LT-5. I didn't confirm, just asked him for the LT-5 but it might be worth looking at that instead of potentially ruining your gearbox and getting caught in a warranty debacle. At this point it will take more than one gear oil change for the fluid not to have a red tinge to it. Cars that were accidentally filled with LT-3 by the dealer, I believe were offered extended warranty on gearbox.

Good luck, truly hope I'm wrong on this one.
I got the wrong oil and replaced twice with the correct ("immediate" and after 1000 miles; did not get offered and extended warranty but certainly will put their feet to the fire if I ever have a problem!.
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