[instalher]

does the f23 really never need servicing..

[MC77]

BMW will tell you no, ZF and indy shops will tell you otherwise. Had my filterpan and fluid changed at ~65k at my indy shop.

[instalher]

ok due you have a trusted vender that can sell me the kit?

[Rich.Wolfson]

Originally Posted by instalher

ok due you have a trusted vender that can sell me the kit?

I used FCP Euro. And if you ever need to do it again, their lifetime warranty is attractive as to do it you need to get a new pan and fluid.

It's not hard to do but do watch the YouTube and FCP videos to be sure.

///Rich

[SpencerC_6MT]

I did the fluid in my 6MT at 50k miles. I'm going to do the diff at 60k as well; it's easy to forget that part.

[s1xspd]

Originally Posted by watermelon3878

I did the fluid in my 6MT at 50k miles. I'm going to do the diff at 60k as well; it's easy to forget that part.

did you feel any changes?

[SpencerC_6MT]

Originally Posted by s1xspd

did you feel any changes?

Nothing radical. People said switching from OE to RedLine might change shift feel, but for me personally I felt no difference. However, my gearbox was developing a tendency to grind on the 1-2 shift as many have noticed with the GS6-45BZ. Switching fluids seemed to lesson or eliminate this effect, but I've also been more careful with gear changes from cold since I noticed the grinding, so it could be a result of my caution.

Regardless, I think it's worth doing fluid changes around 50k miles for the trans. I don't have a ton of experience with RedLine, but I've like what I've read and had a positive experience with RedLine MTL.

[Cos270]

Originally Posted by watermelon3878

Nothing radical. People said switching from OE to RedLine might change shift feel, but for me personally I felt no difference. However, my gearbox was developing a tendency to grind on the 1-2 shift as many have noticed with the GS6-45BZ. Switching fluids seemed to lesson or eliminate this effect, but I've also been more careful with gear changes from cold since I noticed the grinding, so it could be a result of my caution.

Regardless, I think it's worth doing fluid changes around 50k miles for the trans. I don't have a ton of experience with RedLine, but I've like what I've read and had a positive experience with RedLine MTL.

Is this the stuff?
https://www.fcpeuro.com/products/man...Lw_wcB#fitment

I'm planning on doing trans and diff fluid this year at 50K miles.

[SpencerC_6MT]

Originally Posted by Cos270

Is this the stuff?
https://www.fcpeuro.com/products/manual-transmission-gear-oil-redline-83522-50204?ads_cmpid=16239335500&ads_adid=133459073236& ads_matchtype=&ads_network=u&ads_creative=58249681 0043&utm_term=&ads_targetid=pla-1601405432311&utm_campaign=&utm_source=adwords&utm _medium=ppc&ttv=2&gclid=Cj0KCQjw3v6SBhCsARIsACyrRA kwJxjfY57mbdKNcBO4flvHYk0MZsc6A0zoEUcgws0_VlriGL41 EisaAsaFEALw_wcB#fitment"]https://www.fcpeuro.com/products/manual-transmission-gear-oil-redline-83522-50204?ads_cmpid=16239335500&ads_adid=133459073236& ads_matchtype=&ads_network=u&ads_creative=58249681 0043&utm_term=&ads_targetid=pla-1601405432311&utm_campaign=&utm_source=adwords&utm _medium=ppc&ttv=2&gclid=Cj0KCQjw3v6SBhCsARIsACyrRA kwJxjfY57mbdKNcBO4flvHYk0MZsc6A0zoEUcgws0_VlriGL41 EisaAsaFEALw_wcB#fitment"]https://www.fcpeuro.com/products/manual-transmission-gear-oil-redline-83522-50204?ads_cmpid=16239335500&ads_adid=133459073236& ads_matchtype=&ads_network=u&ads_creative=58249681 0043&utm_term=&ads_targetid=pla-1601405432311&utm_campaign=&utm_source=adwords&utm _medium=ppc&ttv=2&gclid=Cj0KCQjw3v6SBhCsARIsACyrRA kwJxjfY57mbdKNcBO4flvHYk0MZsc6A0zoEUcgws0_VlriGL41 EisaAsaFEALw_wcB#fitment[/URL][/URL]

I'm planning on doing trans and diff fluid this year at 50K miles.

Yep, that's the fluid I used. It took less than 2 bottles. If you're planning on track duty, look into MT-85 or MT-90, which is a similar formula but 75W-85 and 75W-90 viscosity. Others on the forum have used D4-ATF, but I'm not a fan since it seems to offer less protection.