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      11-08-2008, 12:26 AM   #13
dvpouldar26
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Drives: 2008 e92 328i, Porsche 987.1
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Quote:
Originally Posted by slammedm3 View Post
ive asked before and never got a proper answer...whats the difference between oiled and non-oiled. i know 1 has less maintenance, but that 1 with more maintenance - does it offer more advantages too?
Dry filters have a 99% filtration efficiency while oiled have a 98% filtration efficiency. This just means that the dry filter filters 1% better than oiled, but the oiled filter's airflow is like 30% better than the dry filter.