Originally Posted by dvpouldar26
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.
That essentially sums it up. The oiled is going to offer the best performance but a bit less filtration and more maintenance. The dry will be more restrictive but easier to maintain.