My car has the getrag GS6-17BZ manual transmission, with around 6k miles on it.
I replaced the 'lifetime fill' BMW factory fluid at 1200 miles as part of a break in service, and I used redline D4 ATF/MTF.
My last BMW had some transmission wear, and I tried several fluids. Ultimately redline MTL was too thick for it in the winter, and it was impossible to shift into first without a crunch. ATF was the best it got, but the input shaft bearings were quite noisy.
I'm wondering if I should try the MTL in the new car, since it's newer and hasn't got any transmission issues. The most important thing to me is protecting the transmission so it lasts as long as possible. My concern is that it'll be too thick for the syncros and result in notchier shifting/very hard shifting when cold.
I replaced the 'lifetime fill' BMW factory fluid at 1200 miles as part of a break in service, and I used redline D4 ATF/MTF.
My last BMW had some transmission wear, and I tried several fluids. Ultimately redline MTL was too thick for it in the winter, and it was impossible to shift into first without a crunch. ATF was the best it got, but the input shaft bearings were quite noisy.
I'm wondering if I should try the MTL in the new car, since it's newer and hasn't got any transmission issues. The most important thing to me is protecting the transmission so it lasts as long as possible. My concern is that it'll be too thick for the syncros and result in notchier shifting/very hard shifting when cold.