While the oiled K&N High-Flow Air Filter continues to be the most popular filter
type among K&N filter products, K&N also offers non-oiled synthetic DRYFLOW air
filters. The DRYFLOW filter media is composed of two-layered synthetic material,
which—much like High-Flow Air Filter media—provides depth loading properties.
DRYFLOW filter media provides slightly less airflow than High-Flow Air Filter
media, though it is still designed to strike a desirable balance between airflow and
efficiency, provide a high level of contaminant capture, and outperform typical
disposable paper air filters in airflow. Because they do not have to be re-oiled,
servicing DRYFLOW air filters is typically a quick and easy process.