Recommended trans fluid - 6 Speed

Silversixspeed · 10-03-2012, 03:55 PM

I'm making a pre winter to-do list, one of the things on my list is replacing the transmission fluid in the 6-speed. What do you guys recommend for fluid? Brand? Weight? How much will it take?

Just curious if there's something better than what BMW would recommend.

Kubica · 10-03-2012, 04:00 PM

Redline d4/MTL 50/50 mix.

Silversixspeed · 10-03-2012, 04:02 PM

What's the reason for mixing them, if you don't mind me asking?

SamDoe1 · 10-03-2012, 04:46 PM

Regular MTL gets really thick in the cold. Mixing it with ATF helps that issue. Also, ATF has a lot of extra detergents and stuff to help keep the internals nice and clean.

I use RP synchromax in mine and it gets pretty thick in the cold, I plan on changing to the mixed method when I change the fluid next.

Silversixspeed · 10-03-2012, 05:24 PM

Oh, makes sense. Glad I asked, as I'll be driving it through the winter. Thanks!

10-03-2012, 03:55 PM	#1
Silversixspeed Registered User Join Date: Sep 2012 Location: Eden Prairie, MN Posts: 80 My Ride: Too many to list View My Garage	Recommended trans fluid - 6 Speed I'm making a pre winter to-do list, one of the things on my list is replacing the transmission fluid in the 6-speed. What do you guys recommend for fluid? Brand? Weight? How much will it take? Just curious if there's something better than what BMW would recommend. Last edited by Silversixspeed; 10-03-2012 at 03:55 PM.

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10-03-2012, 04:00 PM	#2
Kubica Registered User Join Date: Apr 2008 Location: Boston Posts: 3,908 My Ride: 2003 325xi View My Garage	Redline d4/MTL 50/50 mix.

10-03-2012, 04:02 PM	#3
Silversixspeed Registered User Join Date: Sep 2012 Location: Eden Prairie, MN Posts: 80 My Ride: Too many to list View My Garage	What's the reason for mixing them, if you don't mind me asking?

10-03-2012, 04:46 PM	#4
SamDoe1 Registered User Join Date: Oct 2010 Location: Minnesnowta Posts: 2,534 My Ride: 2004 330xi, 3 pedals View My Garage	Regular MTL gets really thick in the cold. Mixing it with ATF helps that issue. Also, ATF has a lot of extra detergents and stuff to help keep the internals nice and clean. I use RP synchromax in mine and it gets pretty thick in the cold, I plan on changing to the mixed method when I change the fluid next.

10-03-2012, 05:24 PM	#5
Silversixspeed Registered User Join Date: Sep 2012 Location: Eden Prairie, MN Posts: 80 My Ride: Too many to list View My Garage	Oh, makes sense. Glad I asked, as I'll be driving it through the winter. Thanks!