2008 E90 M3 6MT with 80k km (50k miles) and it's about time for a transmission fluid change. My car is now out of warranty so I am wondering what the M3 experts are recommending as a fluid replacement.
I'm using my car as a DD and continue to drive it through the Canadian winters. I have not tracked it yet.
Redline MTF? Royal purple synchromax? Stick with OEM? Other brand?
Thanks in advance
