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How often to change microfilter?

7K views 5 replies 4 participants last post by  Axel61 
#1 ·
How often should the microfilter be changed? Is it with every oil change because I just brought my vehicle in and it was never done.
 
#3 ·
If you are referring to the in-cabin filter then it is every other oil change as per my warranty booklet and I have seen the same thing said in some other documents from BMW. If you are referring to the air filter on the engine then I am not sure for that one.
 
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