Bimmerfest - BMW Forums - View Single Post - Redline 75w90 diff I crazy?
View Single Post
Old 11-23-2012, 07:32 AM
mrsanchez3 mrsanchez3 is offline
Registered User
Location: Midwest
Join Date: Oct 2012
Posts: 79
Mein Auto: '05 X3 3.0i
Originally Posted by x3brian View Post
Lol...very well could be a placebo effect but it is extremely noticeable even after 3k miles.

Here's my theory:

The stickier fluid with extra additives is allowing the pinion gears to more freely spin. Therefor when power is applied it gives the feel in the drivers seat of improved acceleration because throttle lag has been reduced drastically. Sport mode heavy acceleration truly pushes you back in the seat now.

Like I said...that's my theory, so I could be wrong but it seems plausible. Either way, I am glad I made the fluid switch.
Yeah, same here.... It very well could have been a placebo effect, but it sure seemed smoother and zippier immediately after the change (I did the diffs and TC fluid at the same time. They'd never been changed until now @ 70k). Now of course I have no idea because I'm used to the feel again...

Either way I'm happy!
Reply With Quote