So what if you get a little less flow with time. That's the whole point of the oiled air filters: It stops the dust, grit and salt before it enters the engine. If all you care about is flow, you can in extremis nix the filter entirely and attach a funnel instead. How about that? Isn't that an excellent idea?

The reason offroad motorcycles and offroad cars tend to have oiled air filters installed quite quickly by people is that they protect the engine better. And if you are able to fit one with a larger surface area than the OEM paper filter, you not only get the protection you also get the airflow you need even when it's not completely clean.

Edit:

Oh, and I think I need to mention that I don't buy that Nissan article one bit. It is contrary to most every other piece of research there is on the subject, and it goes against what people in the real world experience.





Last edited by AQM; 22/08/13 11:28 AM. Reason: Added a bit, clarified a bit etc.