Since these are not the oil type like the K&N, I thought you could clean these with the K&N cleaner but leave off the oil. It feels like it has some type of coat on it (when new) but I don't know what to spray back on it (if anything)?

 

Found some info - thought I would post it incase others are wondering - this is per AEM

Conical Filter Cleaning Procedure 1. Remove filter from intake pipe and set the filter clamp aside. Tap off all loose dirt and debris.2.Measure the length of the filter media.3.Fill a pail with warm clean water to the depth determined in Step 2. Add 12 ounces (one bottle) of AEM Filter cleaning solution to the water.4.Without allowing the solution to flow into the filter neck, submerge the filter into the water and let it soak for 10 minutes. After soaking, rotate the filter back and forth to agitate the water and knock off dirt.5.Empty the bucket of dirty water. Repeat steps 3 and 4. (Both solution bottles will be used for one cleaning cycle)6.Refill the pail with clean warm water and rinse by rotating the filter as in step 4. The water should be clear with no signs of dirt in the pail.7.Allow the filter to air dry. DO NOT APPLY ANY OIL TO THIS FILTER. Re-install the filter on the intake system once it is dry.

 

I need to do this...any stores carry the cleaner? I haven't found any places after a brief run around.