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      03-11-2013, 07:24 PM   #44
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Pittsburger's Avatar

Drives: 2010 328xi, 2006 330xi
Join Date: Aug 2011
Location: Long Island, NY

iTrader: (0)

I changed mine at 25 k (fluid only, using a oral syringe instead of turkey baster).
It was really dirty as u can see in photo. I changed because I thought there was noise coming from the power steering and the serpentine belt. (Unrelated: Turns out it is a normal sound from alternator with 328 design)

There is a school of thought that almost as soon as you replace the fluid it will quickly get dirty.

I might check on the fluid soon, now at 29 k. If its just as dirty as it was at 25 k, I might agree with this school of thought and do it only for paranoid reasons every 30 k, but not worry if it doesn't get done.
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