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Old 09-12-2012, 03:48 PM
wendya wendya is offline
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Location: Southern Indiana
Join Date: Aug 2012
Posts: 50
Mein Auto: 2001 325xi sahara beige
Originally Posted by bimmerized View Post
for those who have not changed or do not know if it has been changed, it's best to change the fluid. Most of the problems that come up after the change are associated with incorrect fluid used. In my opinion its best to stay with a fluid of the same type (dino, semi, full-synthetic) to maintain viscosity regardless of whether it is approved by BMW. A new generation of fluid my not be best for an old transmission. The new fluid may dislodge crude built up over years.

Most importantly, do not ever flush a transmission that hasn't been maintained, just drain and fill 3+ times with new fluid, driven in between.

160K no issues. Fluid changed for first time at 135K.
Thank You!
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