Since the K&N is oiled, I would think you need to clean off the oily
dirt with something petroleum-based, such as kerosene, which might
work well, not soap and water, which would be hard-pressed to get that
junk off. What is the K&N cleaner like? I've never seen it since I
haven't had these filters in long enough to need it.
Jack Rich
90 V8Q
88 Corvette convertible
84 4kq