how long to dry K&N filter?

[Rema1000]

I cleaned my K&N drop-in air filter last night and set it on a wire rack in a dry room; 12 hours later, and it still seems damp (or maybe that's just the residual oil?).  How long does it need to dry before oiling?

[bcutrufelli]

well if you let all of the water dry out first its residual oil and it wont hurt to put it back on I have put them back on way before the time frame you mentioned

[Roadstergal]

You have to make sure it's utterly and completely dry water-wise before you spray the grease on.  That stuff should dry in minutes.

[Recreational_Anxiety]

... and be careful not to over-oil it or you'll be running rich.