Quote:
Originally Posted by Tjalle
Thanks - very instructive. I have X4, but it should be the same.
We have 3 yrs free service in Sweden - at what mileage are you supposed to change filters - yours did not look too bad.
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Not sure about the X3 since I just picked mine up but my 2013 135i would only get a free filter every 35k or so. I replaced mine at 20k and suffice to say it was filthy. Guess a lot depends on where you drive but my butt dyno noticed a difference after the swap!