The 75w90 is the standard weight. The 75w140 is just a little heavier which I have liked so far. A little more dampening.
Originally Posted by mlukas161
Doh, I may have been wrong about that statement. I use redline 75w 90 which says its appropriate for "racing and street driven" vehicles.
Maybe I'll try the 75w 140 next time. I need to change the fluid in the springtime.
I did the same on my Harley to help my "clunk" when shifting into 1st!
My garage: 2007 BMW Z4 3.0si Manual, 2007 BMW X3, 2006 BMW 530xi
Retired: 1998 BMW Z3
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