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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > MTF oil



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      Yesterday, 07:28 AM   #1
juld0zer
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MTF oil

Hi everyone,
Hope you're all surviving this COVID madness alright. Locking us all up does crazy things to the mind so this is born from my boredom.

Just wanted to share my experience with improving my shifting comfort. I wanted slicker, lighter shifts and to make the box feel less agricultural as folks in Europe would say. My car is a 2006 130i with the ZF gearbox (GS6-37BZ). On the label on the box it specifies MTF LT2 oil. I replaced the oil a year ago with LT2 and it made only a tiny difference in comfort. I drained it last week and it looked like diff oil - grey and filthy. My gearbox also has a lot of chatter at idle (it's not the DMF as that was replaced less than 6mths ago). I was reading up on SMF conversions and their associated NVH complaints and one supplier claimed to eliminate 90% of it with a homebrew 50:50 mix of Redline 75w140NS and Redline D4 ATF. Redline oils here are very expensive but I have heaps of BMW oils available. Based on the Redline specs, I chose MSP/A which is a 75w140 oil used in F8x LSD and ATF3+ which is the ZF 8 speed oil. I mixed it by combining a litre of each into a big bottle and shaking it up for a couple of minutes.

The difference is night and day. It feels like a brand new box, almost as good as my old MX-5's box if only the throw was shorter. It is slicker and lighter in all operations of the lever. It is still a bit notchy but i think that is how this box is. Better than a vague rubbery shifter i guess. It's starting to get cooler here now (below 20*c in mornings) and the box feels as good as it does when it is fully warmed up
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      Today, 10:27 AM   #2
matteblue3er
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I used D6 ATF in my manual trans from Redline. That's what they recommend. Unfortunately I don't have a stock gearbox/fluid setup to compare to (was an auto originally)
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