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BMW135xi BMW135xi is offline
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Default Changing Tranny Fluid - 02-03-2018, 03:36 PM

Question/ I have a 135I and it is time to change my transmission fluid.
Car -86,000 miles. What is the best fluid I can put.
1-Liqui Moly.
2-Red-Line
or stay with factory fluid.
I heard some people putting red line and transmission slipping.
Liqui Moly is used in the GTR cars , is very sticky to the clutches,
but I have not seen any reviews yet on the N54 tranny .Any suggestions.

Last edited by BMW135xi; 02-03-2018 at 04:59 PM..
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Ando @ BMS Ando @ BMS is offline
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Default 02-03-2018, 05:58 PM

I have tried redline once when doing valvebody upgrade.
I can't tell you if it was better then OEM or not as my AT started slipping at 620 wheel torque.


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ShocknAwe ShocknAwe is offline
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Default 02-03-2018, 06:00 PM

I use Redline MTL. Not knowing what transmission you have complicates suggestions.


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Default 02-03-2018, 06:07 PM

i have At(Steprtonic) tranny , not manual or DCT
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N54QC N54QC is offline
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Default 02-03-2018, 07:48 PM

I used Pentosin. Has worked great so far, 20k with no issues.


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seroga1986 seroga1986 is offline
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Default 02-08-2018, 09:33 AM

Use OEM only. I have used redline and trans started slipping. There should be some threads on here about this.


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Default 02-08-2018, 01:37 PM

Ok thanks, I will keep my OEM .
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