In Reply to: Redline Replacement for Trans and Diff posted by Scott in Md on June 18, 2000 at 09:10:07:
This is a BMW accepted practice for anyone that complains that shifting is too hard in colder weather. I had mine changed in October of 1999 at the suggestion of the BMW techician even though the weather was only starting to get cool and I had no real problems with stiffness before warm-up.
Immediately after getting the fluid change I noticed easier shifting at all times particularly before warm-up.
I did not replace the differential oil as I'm still using the original BMW fill.
I have used Redline's products before and have been very pleased with all of them. I was most familar with their various MTL products for transaxles, their engine oils and their coolant additive called Water Wetter.
To answer your question, I would consider the change not only a safe and fully endorsed change but also an appropriate change.
: Just checking, however, would like to know how many M owners have replaced the "lifetime" lubricants in their transmission and differentials with Redline. I can feel a very slight difference in shifting ease. Is this move safe? Thanks.