Quote:
Originally Posted by TboneS54
It is not. It's not synthetic. That's why it's so cheap. Plus, you want a GL4 fluid (yellow metal safe) for manual tranny. GL5 (extreme pressure molybdenum fm) is for diff.
The EP additives in GL5 will eat away at the soft yellow metals in manual tranny's synchros.
It's hard to get bmw mtf2 (gl4) any more, and the OE Pentosin is NLA, but pentosin's FFL4 (DCT fluid) is backwards compatible with manual tranny needing gl4 75w/80wt. I've used both pentosin mtf2 and the ffl4 fluid and there is no difference in feel.
There are a couple other gl4 full synthetics out there, though most are a little too heavy at 75w90. Amsoil has one. Redline. There are other options in europe like Elf, fuchs, ravenol.
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I don't know where you get your information from... but Febi Bilstein is a OEM manufacturer - maybe not for the M3 but other models and manufacturers.
The fluid meets all BMW manual transmission spec for the M3.
It is made in Germany and OEM certified for these BMW specs:
BMW MTF LT-1
BMW MTF LT-2
BMW MTF LT-3
BMW MTF LT-4
I used to run Redline's suggested D4 ATF. The car doesn't shift any differently.