You have your choice of duplicating BMW's ATF with Redline D4 ATF or using
the slightly more viscous MTL. Most BMW technicians prefer MTL. I just put
it in my trans (2003 5sp) and notice no change in shifting. That might not
be the case when it gets cold.
For the diff, 75w90 Redline.
These are both the recommendations of Mike Miller, Roundel tech guy.
R / John
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.